What were you and your father doing at 7: 00yesterday evening?
I was doing my homework_____ my father was reading newspapers.( )
when
as soon as
while
Look at the sign "No swimming", it warns us ________ in the lake.( )
to swim
not to swim
swimming
In February, 2020, many doctors and nurses ________ to Wuhan to save the patients.( )
was sent
were sent
are sent
There ________ something wrong with my mobile phone. It can't work these days.( )
must be
can't be
may be
________ you keep moving, you'll never reach the top of the mountain.( )
If
Although
Unless
I asked him a question, but he didn't reply.
Maybe he ________about something else while you were asking.( )
thought
thinks
was thinking