Mr. Smith didn’t understand _____ made his son so upset that evening.
A.what was it | B.why it was this | C.how that was | D.what it was that |
How long ____ to finish the work?
A.you’ll take | B.you’ll take it | C.will it take you | D.will take you |
____ four years since I joined the Army.
A.There was | B.There is | C.It was | D.It is |
The climate of Shanghai is better than ____ of Nanjing.
A.that | B.it | C.which | D.what |
We think ____ our duty to pay taxes to our government.
A.that | B.this | C.its | D.it |
____ will do you good to do some exercise every morning.
A.It | B.There | C.Those | D.You |