语法词汇练习 语法大全 语法详解 英语听力 
______nature reserves _______us learn more about protecting animals.
#48781
A
Studying ; help
B
Studies ; helps
C
To study; helping
D
Studying; helps
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---I’m too busy________ to my family often. --- Why not call them instead ?
#50313
A
writing
B
write
C
written
D
to write
How kind you are! You always do what you can ________ me.
#49665
A
help
B
helping
C
to help
D
helps
Students should learn how        problems.
#49250
A
solve
B
solving
C
can solve
D
to solve
Tom’s mother asked him _________ some washing after dinner.
#48874
A
do
B
to do
C
does
D
did
---I feel tired and sleep y . ---Why not         for a while ?.
#48556
A
stop resting
B
stop to rest
C
to stop to rest
D
stopping to rest