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? Passenger ships will be built to travel undersea ___ storms can not delay them or made passengers seasick. 詞匯與語法(九) 介詞與副詞 ? She persists ___ studying English, although she is very busy. ? Few writers are so expert that they can produce what they are ___ on the first try. ? It’s quite late now, but Mrs. Smith ___hasn’t left her office. 詞匯與語法(十) 虛擬語氣 ? I thought you ___ out. been ? I ___ the lecture yesterday evening, but I had something very urgent to do. have attended not attended attend ? Without your support, I ___ the election. have lost lost