19. It surprised us________there was so little stone in the wall——all the construction material was of mud brick A: which B: who C: whom D: that

Are there enough books for ____? A: three us B: us three C: all us D: the three us

______ agrees to your plan. A: Anyone of us B: No one of us C: None of us D: Someone of us

Mr. Yang ______. A: teaches math us B: teaches us to math C: teaches math to us D: us teaches math

What does sleeping help us? A: It helps us stay healthy. B: It helps us improve our memory. C: It helps us reduce stress. D: It helps us lose weight.

Miss Li is ______ English teacher. She likes______ very much. A: our, we B: our, us C: us, our D: us, us

The new washing-machine has been______. A: giving us trouble B: getting us trouble C: asking us trouble D: looking for us trouble

The teacher told us that Tom us for America．

Any delay in the shipment would ______. A: cause us in inconvenience B: involve us in much inconvenience C: involves us in convenience D: involve us inconvenience

The covering L/C must be confirmedby _____. A: the bank to accept us B: B.a bank acceptable to us C: the bank acceptable for us D: a bank acceptable by us