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The doctor did what he could ___________ the kid.
#49829
A
save
B
to save
C
saved
D
saving
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 I study math by ____ lots of exercises.
#49928
A
did
B
doing
C
do
D
does
The policeman warned the driver _______too fast. It was very dangerous.
#49600
A
to drive
B
not to drive
C
driving
D
not driving
 The children enjoyed_______ very much last night.
#49029
A
they
B
them
C
themselves
D
theirs
 It is time     to school.
#49964
A
go
B
to go
C
going
D
goes
 I’ve asked him __________ us for dinner, but he said he was quite busy.
#49861
A
joining
B
to join
C
joined
D
join