We should wear special boots __________ us floating away into the space .
#48510
A
to prevent
B
preventing
C
prevent
D
prevented
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What bad weather it was!We decided   . 
#48991
A
to go out
B
not to go out
C
to not go out
D
not going out
 How much time did you spend ________ a bargain?    
#51388
A
look for
B
looking for
C
to look for
D
looked for
— Is tea ready?— No, mother is ______ it ready now.
#51393
A
doing
B
cooking
C
burning
D
getting