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
---Jim, ________ read books while you are walking in the street. It’s very dangerous.---OK, thank you.
#39061
A
don’t
B
doesn’t
C
won’t
D
can’t
-- It is often said , “ All roads _________ Rome . ”--- Yes . I’m sure if you work hard , you will be _________ .
#39516
A
lead to , successful
B
lead to , successfully
C
leading to , success
D
leading to , successful
It ___________ heavily when I left school yesterday.
#41974
A
was snowing
B
is snowing
C
snowed
D
is snowy
---Is your father still in Shanghai? ---Yes, he _________there for two weeks.
#41753
A
has gone to
B
has gone
C
has been in
D
has been
— What are the kids doing?— They ______ flowers in the garden.
#42051
A
water
B
watered
C
have watered
D
are watering