It’s ten o’clock. The children are ___ a good time.
#41953
A
having
B
doing
C
taking
D
playing
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—Where is Sally, Jack?—She _________. She wants to be a swimming player.
#40475
A
walks
B
is swimming
C
swims
D
is sleeping
Great changes _____ in my hometown since 1980. 
#38200
A
have been taken place
B
took place
C
have taken place
D
were taken place
The flood _____ about _____ people since it happened.
#38625
A
has affected; 10 million of
B
has affected; 10 million
C
affected; 10 millions of
D
affected; 10 millions