The school has developed an online system students can choose their own teachers.
A. which B. that C. whom D. where
We’d better stay here a little longer he turns up unexpectedly.
A. although B. in case C. since D. if only
---I’m sorry, but there is no smoking on this flight.
---Oh, I _____that. Sorry, I won’t again.
A. don’t know B. didn’t know C. won’t know D. haven’t known
---Have you read the book?
---Yes. But that one is _____worth reading. I suggest you______ it if you have time.
A. best; read B. well; read C. better; read D. more; should read
_____the problem of land erosion getting more serious, the government is searching for a way to deal with it.
A. As B. With C. When D. If
---Did you visit the temple?
---No. We _____it, but we spent too much time shopping.
A. could have visited B. could visit
C. needn’t have visited D. mustn’t have visited
