【正文】 r19．—Dad, I39。ve tried my best but I still can39。t solve these problems.—Don39。t worry, my son. No one is ________ and everyone fails from time to time.A．successful B．confident C．perfect D．excellent20．Thanks a lot for offering such _______ to me in my research.A．usual advice B．important advice C．a(chǎn) usual trip D．valuable trip21．—Linda is practising the violin for an hour these days.—I see. It’ll make her ________ enough to perform on stage tonight.A．a(chǎn)ctive B．humorous C．confident D．patient22．—I always get the best grade in my class, but I’m feeling stressed.—Why? Are your parents too ________ with you?A．a(chǎn)ngry B．satisfied C．bored D．strict23．—We’re late! It’s already 7:30.—Don’t worry. My clock is 20 minutes ________.A．fast B．late C．slow D．early24．It’s ________ knowledge that moods can have an influence on our health.A．unusual B．special C．general D．mon25．—What do you think of the new car produced by BYD?—Oh, its improved system gives people a ________ ride even on mountain roads.A．similar B．terrible C．strange D．smooth26．—Peter, have you heard of the song Let it go? —Yes, it sounds _________ and it39。s popular among young people.A．nice B．bad C．terrible D．strange27．— Why do English people talk so often about the weather when starting the talk?—Because the weather is a (an) ________ topic.A．safe B．serious C．a(chǎn)wful D．exciting28．—How was your exam the day before yesterday?—Well, I feel quite good. I made ________ mistakes than before.A．fewer B．the fewest C．less D．the least29．— More and more people like group buying on WeChat.— You said it. The prices are ________.A．much lower B．much cheaper C．more expensive D．even higher30．— I got a job in a sales pany.— Great! Make yourself ________ so that they don’t want to lose you.A．valuable B．possible C．enjoyable D．fortable31．— How do you find the price now? — As a ________ rule, prices follow needs.A．private B．general C．central D．difficult32．The girl’s voice sounds ________. Maybe she can bee a good singer when she grows up.A．terrible B．well C．sweet D．wonderfully33．Mr. King is very ________. He explains the difficulties many times until we understand them.A．strict B．patient C．polite D．hardworking34．My little cousin is a(n) ________ boy and he always es up with new ideas for class activities.A．creative B．curious C．organized D．energetic35．—Henry, you seem ________ than before. What are you doing these days?—Well, I am preparing for the ing examination.A．busier B．happier C．lazier D．healthier36．In the USA, many people use decorations to make their yards more ________.A．live B．lively C．a(chǎn)live D．living37．—Like so