Lady Gaga has put off her concerts because of the difficulties ______ by the ongoing strikes.
#92743
A
causing
B
to be caused
C
caused
D
to cause
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He apologised to me for his ________ my letter.
#96664
A
delaying answering
B
delay to answer
C
delaying to answering
D
delaying to answer
Which do you enjoy        your weekend, swimming or fishing?
#90726
A
spending
B
being spent
C
spend
D
to spend