Smiling doesn't ________ mean you're happy.Sometimes, it just means that you're strong enough to face problems.
Was __ at the air battle on June 8,1994, ____ was led by Captain Johnson ___ Peter lost his life?
Could it be in the restaurant ________ you had dinner with me yesterday ________ you lost your handbag?
He said that the key _____ to open the door had been lost.
I think you’ve got to the pointa change is needed, otherwise you will fail.
The small mountain villagewe spent our holiday two years ago lies in Hubei.