–What time do you expect me back, Mum
--Say, ______ half an hour
before D
When will the train D51 arrive
--_______ a few minutes
Since B
After 3
While I was standing _____ the window, I saw several boys running _______ the street
at, along B
on, at C
in , on D
to, in 4
–How soon will the manager come back
---_______ about three days
After C
During5
The earthquake which happened in Yushu _______ 14th April 2010 was a big disaster
–Frank, when will the short meeting begin
–You should come ______ 2:30
If you come 10 minutes ______ that time, the meeting will be over
at, before B
at, after C
after, before D
by, before7
______ the afternoon of April 30th, many foreign visitors arri