--I can’t find John .Where did you meet him this morning? -- It was in the hotel _____ he stayed.
I'll have you ______ English in six months .
I posted the letter some time _____ the week .
Take a taxi , _____ you'll miss your train .
If you _____ stop smoking , you can only expect to have a bad cough .
There must be _____ book which could help .