---I think Helen is at home.
---No, she be at home, for she phoned me from the airport just five minutes ago.
| A．mustn't | B．needn't | C．can't | D．dared not |
is some doubtTom will come to see me this weekend as usual.
| A．It; that | B．It; whether |
| C．There; that | D．There; whether |
—Have you heard that Jones, along with her parents, to Hainan for the winter vacation?
—Really? No wonder I haven’t seen her these days.
| A．has been | B．have been |
| C．has gone | D．have gone |
The book was writtencareful observations and detailed studies.
| A．on the ground of | B．on behalf of |
| C．on average | D．on the basis of |
—How did he break his head while swimming?
—my warnings, he dived straight into the shallow water.
| A．To ignore | B．Ignored |
| C．Ignoring | D．Being ignored |
It remains to be seenNorth Korea will remain stable under its new young leader.
| A．when | B．whether | C．why | D．that |