- What did Mr. Smith do before he came to China?
A: works
B: worked
C: is working
D: will work
A: works
B: worked
C: is working
D: will work
举一反三
- She had in the factory before she here. A: work, come B: working, coming C: worked, came D: works, comes
- Not until Mr. Smith came to China ______ what kind of country she is. A: he knew B: he didn't know C: did he know D: that he knew
- Not until Mr. Smith came to China ________ what kind of a country she is. A: did he know B: he knew C: he didn’t know D: he could know
- The door opened and in ______. A: he came B: came he C: did he come D: did Mr. Smith come
- Mr. Smith is the only one of those foreigners who ____ in China now. A: worked B: is working C: are working D: have been working