When the teacher ______ how to do the experiment, the bell rang.
#37863
A
explains
B
will explain
C
was explaining
D
is explaining
推荐题目
It __________ hard outside, let’s not go shopping.
#40256
A
rains
B
will raining
C
raining
D
is raining
Last Sunday, we went to China Dinosaur Land in Changzhou. We ____________ there for 10 hours.
#37611
A
have stayed
B
will stay
C
stayed
D
stay
---What you when it is snowing? --- I do some washing with my mother at home.
#41782
A
are, do
B
are, doing
C
do, do
D
are, going to do
A boy with two dogs ______when the earthquake rocked the city.
#39795
A
were sleeping
B
is asleep
C
was sleeping
D
are asleep