Only after I had known him for some time to appreciate his real worth.
A. do I begin B. did I begin
C. I began D. had I begun
Is it the burning of more fossil fuels ______ is resulting in this increase in carbon dioxide ?
A. as B. which C. what D. that
Was it when you were talking with a friend under the tree ______ your bike was gone? www.7caiedu.cn
A. that B. where C. which D. while
He is a good student，and works very hard；.
A. so it is with her B. so was she
C. so she is D. neither does she
we first heard of the man referred to as a computer specialist in software. w.w.w.k.s.5
A. It was Hilary that B. That it was from Hilary
C. It was from Hilary whom D. It was from Hilary that
It was in 1969 ______ two Americans went to the moon by spaceship.
A. when B. that C. at that time D. just then
