【正文】
?日期 /時(shí)間 ? ?頁腳 ? catching _______ ?日期 /時(shí)間 ? ?頁腳 ? watching _______ ?日期 /時(shí)間 ? ?頁腳 ? picking up______ ?日期 /時(shí)間 ? ?頁腳 ? What are they doing? Are they ________________? Yes, they are. No, they aren’t. playing football ?日期 /時(shí)間 ? ?頁腳 ? What is Mike doing? Is he ________________? Yes, he is. No, he isn’t. picking up