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___________for his good skill, this doctor has a lot of visitors calling for help all the time.
#48486
A
Knowing
B
To know
C
Known
D
To have known
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Can you hear the girls ______in the next room?
#49585
A
sang
B
tosing
C
singing
D
sing
--- Did they have fun _____________?    --- Yes, they did.
#51333
A
to camp
B
camped
C
camping
D
camp
He likes ______ English book.
#49727
A
read
B
reading
C
speak
D
speaking
We must do everything what we can _______ water and paper.
#48856
A
save
B
saving
C
to save
D
saved
—We should do what we can ________ the endangered animals.—Yes, it’s our duty_________ them.
#48378
A
save; to protect
B
save; protect
C
to save; protect
D
to save; to protect