Everyone here will thank the firefighters for the things they did to prevent fires ________the environment safer.
#89772
A
to make
B
make
C
making
D
from making
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—Is Alice still performing?—I'm afraid not. She is said _______ the stage already as she has become a director.
#98461
A
to have left
B
to leave
C
to have been left
D
to be left
At the top of the mountain，__________ to see the blue sky，the kids made cheerful noises of all kinds．
#88680
A
delighted
B
delighting
C
having delighted
D
delight
______ this new style of hat---maybe you will find it suitable for you.
#95805
A
Having tried
B
Trying
C
Try
D
To try