—Is the letter from your mother?
—Yes.But she ________the letter herself，because she doesn’t even know one word.
| A．needn’t have written | B．can’t have written |
| C．might not have written | D．should not have written |
The doctor would allow him to go home _____ he remained in bed.
| A．as though | B．for fear that |
| C．on condition that | D．as far as |
All the girls swam in the lake except two, who _____ halfway.
| A．gave off | B．gave up |
| C．gave away | D．gave out |
He regards that book _____ one of the worst that he’s _____ read.
| A．to be, ever | B．to be, never |
| C．as, ever | D．as, never |
We’re so busy that no one in the office can _____ for any other work.
| A．spare | B．be spared |
| C．share | D．be shared |
The president _____ a cool reception when he visited London.
| A．gave | B．was given |
| C．had given | D．had been given |