a) many young people (go in) for snooker. OR
b) Many young people (have gone in) for snooker.
句子沒有表示時間,而且似乎說明是時下青年的愛好興趣,答案為什麼不是a,補習社答案是b。
c) The thieves (had blown up) the hut before they left. Or
d) the thieves (blew up) the hut before they left.
blow up 的行動是早過left,為什麼答案不是(c)呢?補習社答案是(d)
e) When we reach New York, half of our journey (will be done). OR
f) When we reach New York, half our journey (will have been done).
為什麼我不能說我到達New York 時,我將會己經完成了一半路程,而將答案是(f),補習社答案是(e)。
g) The news of the wonderful discovery (have been published) in all the newspaper. OR
h) The news of the wonderful discovery (is published) in all the newspaper.
補習社答案是(h),但其實不是經常印制,又或是現在印刷出來,所以是否(g) and (h) 都是對呢?
i) By the time you leave college, I (will retire) from business. OR
j) By the time you leave college, I (will have retired) from business.
補習社答案是(j),為什麼我不能想像當你離校的時侯,我亦同時間退休
k) Vicky's grades (have gone) down. OR
l) Vicky's grades (went) down.
(k) and (l) 那條是對呢?又為什麼用這個tense?