The robot needs _______ once a month. And we will check it for you for free.
#48844
A
to check
B
checked
C
checking
D
to checking
推荐题目
---Why do the people decide ______ these days? ---Because there’s not much to do.
#49797
A
visit
B
to visit
C
not visiting
D
not to visit
She always watches her son ________ the road every morning, or she will feel worried.
#48963
A
crossing
B
cross
C
to cross
D
to crossing
________is wrong with my watch . It’s has stopped _________.
#48615
A
Something ; working
B
Something ; to work
C
Anything ; working
D
Anything ; to work
---Do you prefer _______ to Beijing by air?---I would rather _______ a train.
#48467
A
going, to take
B
going, to take
C
to go, take
D
to go, to take
There are many old and new inventions in the museum. What else is there _____ in it?
#49174
A
see
B
to see
C
seeing
D
saw