Nobody knows ______ yesterday.
A. how the accident happens
B. how does the accident happen
C. how the accident happened
D. how did the accident happen
The park gates ______ at 10：00 every evening.
A. lock B. locked C. are locked D. were locked
Mum told Andrew ______ quiet in the museum.
A. keep B. to keep C. keeping D. kept
My uncle is a writer. He ______ many books since he was young.
A. writes B. wrote C. is writing D. has written
I ______ you a copy of the report as soon as I finish it.
A. send B. sent C. will send D. has sent
— ______ are your parents?
— They’re very well. Thanks.
A. How B. Who C. What D. Where
