There are some health problems that,when ________ in time,can become bigger ones later on. (2013·浙江,19)
-- Oh, my god! I just missed the last bus back home. -- That’s really bad. I’m sure you ____ it, but you were not in a hurry.
Do you still remember the chicken farm ____ we visited three months ago?
He has recently ____ golf to provide himself with some relaxation.
The island is two kilometers off the coast, and you can’t get there ____ by boat.
No sooner _____ themselves in their seats in the theatre _____ the curtain went up. A. they have settled; before B. had they settled; than C. have they settled; when D. they had settled; than