The boy was so tired that he fell asleep _______ his mother could take off his clothes. 
#30840
A
before
B
after
C
while
D
when
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_______ we call the First Aid Centre, the doctors _______ by and by.
#80239
A
No sooner; would come
B
Soon after; would come
C
Shortly; are coming  
D
Immediately; will come
    he visited the new school, he showed great interest in everything he saw.
#31019
A
It’s the first time
B
For the first time
C
The first time
D
At first