I bargained with the shopkeeper for a long time, and finally we agreed________the price.
| A．to | B．with | C．on | D．at |
— Do you know where David is? I couldn’t find him anywhere.
— Well. He ________ have gone far — his coat is still here.
| A．shouldn’t | B．mustn’t | C．can’t | D．wouldn’t |
Sara hopes to become a friend of _________ shares her interests.
| A．anyone | B．no matter who | C．whoever | D．whomever |
He has some doubt ________ he will succeed in his research work.
| A．whether | B．weather | C．which | D．that |
_________ is known to all, the moon travels round the earth once every month.
| A．It | B．As | C．That | D．What |
Sorry, I am late. I ______ have turn off the alarm clock and gone back to sleep again.
| A．might | B．should | C．need | D．would |