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It is necessary _____ something to protect our environment.
#50188
A
do
B
to do
C
does
D
doing
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______nature reserves _______us learn more about protecting animals.
#48781
A
Studying ; help
B
Studies ; helps
C
To study; helping
D
Studying; helps
Do you enjoy ________ books?
#50698
A
seeing
B
reading
C
to see
D
to read
I have a friend __________ Millie.
#49994
A
call
B
to call
C
called
D
calling
Ann spends two hours _______ sports in the gym every day.
#48783
A
to do
B
doing
C
do
D
does
Simon made a big bamboo box _______ the little sick bird till it could fly.
#49425
A
keep
B
kept
C
keeping
D
to keep