Mr. Wu___this math problem____him many times, but he still doesn’t understand it.
#38768
A
explains ; to
B
has explained ; for
C
has explained ; to
D
explained ; with
推荐题目
—Hi, guys. Where are you heading now?—Home. We _________all our money, so we have to walk home now.
#42106
A
spend
B
spent
C
have spent
D
are spending
I like the movie Harry Potter very much. I ________ it three times.
#36521
A
watch
B
watched
C
was watching
D
have watched
I wonder if he _______ this weekend. If he ______, I’ll let you know.
#42033
A
will come; will come
B
will come; comes
C
comes; comes
D
comes; will come
Look!One of the children _____ in the river.
#42549
A
was swimming
B
is swimming
C
are swimming
D
were swimming
The mobile phone has influenced people's life a lot since it __________.
#36751
A
invents
B
invented
C
is invented
D
was invented