Staying in hospital and taking special medicines ________ drug users an opportunity to stay away from drugs, which is________ the key to breaking the addiction to drugs lies.
#101126
A
serves; where
B
provides; what
C
give; that
D
allow; where
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Hurry up, kids! The school bus _______ for us!
#100583
A
waits
B
was waiting
C
waited
D
is waiting
The days we have been looking forward to ____ soon.
#104465
A
coming
B
will come
C
came
D
have come
--- I ____ so busily recently that I ____ no time to help you with your maths.---That’s OK. I can manage it by myself. 
#100194
A
had been working; had had
B
have been working; had
C
have been working; have
D
am working; will have