She says that she'll have to close the restaurant____business improves.( )
if
after
unless
when
You'd better tidy up your room ____ your father comes back.( )
so
or
before
but
I was busy this morning and didn't have time to __________ my email.( )
waste
punish
believe
check
I ________ be late, so don't wait for me to start the meeting.( )
mustn't
needn't
need
may
Because people can find information on the Internet, knowledge spreads __________.( )
quickly
loudly
hardly
nearly
In China, we use red paper for hongbao because red means good luck.
That's interesting! I want to know all the Chinese ____________.( )
traditions
sentences
notices
problems