We still have some other ways to solve the problem．You ______ be worried．
| A．mustn’t | B．can’t |
| C．don’t have to | D．may not |
The lady said she would buy a gift for her daughter with the ________.
| A．20 dollars remained | B．20 dollars to remain |
| C．remained 20 dollars | D．remaining 20 dollars |
Paper bags produced every year are ______ the world’s production of vehicles.
| A．as three times heavy as | B．three times weight of |
| C．three times the weight of | D．three times as heavier as |
—Well, I do think the ipad is smart, convenient and intelligent.
—________.
| A．So it is | B．So is it | C．So does it | D．So it does |
You have to believe in yourself. Self-confidence is _____ to success.
| A．essential | B．combined | C．similar | D．compared |
His spare time is made full use_______ law.
| A．to study | B．study | C．of studying | D．of to study |