________ repeatedly, the problem still appeared in the beginners’ homework.
#100762
A
Explaining
B
Having explained
C
Having been explained
D
To be explained
推荐题目
-- Who do you think ___ the book here? --- It may be John. He was sitting here all the morning.
#103608
A
has left
B
leaves
C
had left
D
was leaving
—What’s the price of petrol these days?—It ________ frequently since last year.
#99445
A
is arisen
B
increased
C
has been rising
D
has raised
－It’s many years since I saw you last, I __________ you at all.－I wouldn’t have, either, if someone __________ you by the name.
#103266
A
didn’t recognize; hadn’t called
B
didn’t recognize; didn’t call
C
haven’t recognized; didn’t call
D
can’t recognize; had called
The moment the ambulance（救护车）came to the hospital, the sick man ___________ to the operation room.
#103409
A
rushed
B
was rushed
C
was run
D
was dashed
The little boy is dirty from head to foot because he______in the mud all morning.
#104172
A
has played
B
is playing
C
has been playing
D
was playing