The population of Africa is ________ so rapidly as to cause concern of the whole world.
#71177
A
expanding
B
circulating
C
exporting
D
spreading
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If he keeps on working so hard, he will sooner or later.
#65813
A
break off
B
break up
C
break out
D
break down
Tom received an invitation from Carrol but he ______.
#77137
A
refused to go to the party
B
refused her
C
refused her to the party
D
refusing to go
If we can ____ our present difficulties, then everything should be all right.
#82113
A
come across
B
get over
C
come over
D
get off