While the book on the top shelf , you need to be very careful .

While         the book on the top shelf , you need to be very careful .

#85820

to reach

reaching

reach

are reaching

推荐题目

The Greens_____ in the room.

#43752

are

Every means _____ prevent the water from _____.

#85804

are used to; polluting

will be used to; polluting

is used to; polluted

is used to; being polluted

The watch and chain as well as the ring    of gold.

#85719

are made

were made

is made

was made

----He likes teachers who ________ easygoing. ----So do I.

#43596

are

was

were

–What ___ the number of the students in your school?–About two thousand. A number of them_____ from England.

#43965

is; are

is; is

are; is

are; are

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