.
—Must I turn off the gas after cooking?
—Of course! You can never be__________careful with that.
A.enough | B.too | C.so | D.very |
He _____ himself in Shanghai.
A.lost | B.missed | C.losing | D.missing |
I was about to leave _____ the telephone rang.
A.then | B.when | C.that | D.and when |
Children under 10 are not permitted _____ the film.
A.to see | B.seeing | C.saw | D.watched |
All he was thinking about was ____ he would do with the big sum of money his father gave him.
A.how | B.what | C.that | D.Whether |
23. The harder we work at our lessons, _____.
A.the better our grades will be | B. our grades will be better |
C.will our grades be better | D.even better our grades will be |