Occasions are quite rare ____I have the time to spend a day with my kids.
A. who B. which C. why D. when
By the time he realizes he ____into a trap, it’ll be too late for him to do anything about it.
A. walks B. walked C. has walked D. had walked
Thank you for all your hard work last week. I don’t think we _____ it without you.
A. can manage B. could have managed
C. could manage D. can have managed
_______was most important to her, she told me, was her family.
A. It B. This C. What D. As
He found it increasingly difficult; _____his eyesight was beginning to fail.
A. though B. for C. but D. so
Students should be encouraged to use ____Internet as ____resource.
A. 不填; a B. 不填; the C. the; the D. the; a
