Before a problem can be solved, it must be obvious ______the problem itself is.
A.what | B.that | C.which | D.why |
--- Who do you think ___ the book here?
--- It may be John. He was sitting here all the morning.
A.was leaving | B.leaves | C.had left | D.has left |
David can speak idiomatic American English and yet, _____ English, he doesn't know it at all.
A.how to teach | B.when it comes to teaching |
C.when he teaches | D.however he teaches |
--- How I wish we studied ____ there are fewer exams!
--- You’re joking!
A.where | B.in which | C.the place where | D.in where |
--- Could you introduce me a high quality car?
--- My pleasure. ____ well even on wet roads, this kind of car is very popular.
A.Handled | B.To handle | C.Handling | D.Being handled |
--- Where are the students ? How could they keep us waiting for so long?
--- They started an hour ago and they____ be here in fifteen minutes, I think.
A.might | B.would | C.should | D.must |