These boxes ______ for keeping the food clean and cool.
#39501
A
use
B
are used
C
have used
D
were using
推荐题目
Mr. Wang told us that the moon ______ round the earth.
#39997
A
traveled
B
travels
C
traveling
D
travel
--- I’d like to introduce my best friend to you , Peter .---- Thank you , Lucy . But we __________already .
#39396
A
meet
B
met
C
will meet
D
have met
How long have you read this book?_________________.
#40080
A
In 1980
B
Three years ago
C
Since three years
D
Since 1980
China ______ the WTO for more than 10 years, and it has brought great changes to it.
#41666
A
has joined
B
has been in
C
has become a member of
D
has joined in
It _____ last week that the haze(雾霾)in Beijing caused many problems.
#38853
A
reports
B
reported
C
is reported
D
was reported