I’m sure you will do better in the test because you ________ so hard this year.

-------- The window is dirty.
--------- I know. It __________ for weeks.

I asked him to come at seven o’clock, but he __________. It’s already eight o’clock．

— Mum，I really think Dad should have a break and get relaxed．
—Yes．He          too long.

–More than 13.7 million Americans were unable to find work in July.
--Yeah, most        jobs for months.

Food supplies in the flood-stricken area ______. We must act immediately before there’s none left.

He kept looking at her, wondering whether he          her somewhere.

Half an hour has been made full ______ of _____ the problem.

—How long ____ you ____ in Singapore?
—For just the weekend． I’ll be back next Monday morning．

Every possible means ___ to prevent the air pollution, but the sky is still not clear．