Some Southeast Asian countries were quick to ________ the search for a missing Malaysian airliner–Malaysia Airlines Flight 370.

The number of people invited ________ fifty, but a number of them ________ not seen at the meeting.[ ]

You can see the stars on a clear night，but in the daytime theyare _______.

is it from your home to the school — It’s about five miles.

How can they expect to learn anything ________theynever listen