Where is my pen? I ________ it.

1. A.
   might lose
2. B.
   would have lost
3. C.
   should have lost
4. D.
   must have lost

Where ________ buy a computer for your son?

1. A.
   you are
2. B.
   are going
3. C.
   you go
4. D.
   are you going to

.---Where’s that report?

---I brought it to you ________ you were in Mr. Black’s office yesterday.

A.if     B.when    C.because    D.before

——Where did you come across our chemistry teacher ?

------ It was in the supermarket ______ I purchased mooncakes.

A. that             B. which           C. where                D. when

—Where did ________traffic accident happen,sir?

—It took place at ________crossroads by the bank.

A.a;/                                   B.the;a                         C./;a                                   D.a;a