[題目] 時態的選擇
書名: easy test
頁數:
題目: It is extremely important that he ______ this medicine
exactly as the doctor has instructed him.
A.take
B.have taken
C.is taking
D.took
答案: A
疑問:1.不能選B的理由,是因為 "服藥" 是瞬間完成的動作嗎?
可是句末用了has v-ed. 不是指一段持續到現在的事嗎?
2.若需用簡單式.為何不能用took?
希望有大大幫忙解惑.感謝~
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