Instructions for homework have to be ______ so that every student knows clearly what is to do after class.
Reportedly yesterday a group of American soldiers were walking along the road in Irap when a bomb was ______ .
-----Tony said he could fix my bicycle, but I really doubt it. ----- _____.He’s good at that sort of thing.
In order to find ____better job, he decided to study _____second foreign language.
Do you think this shirt is too tight ____ the shoulders?
We ______ the difficulty together, but why didn’t you tell me?