Below the topsoil of the earth is the subsoil, _____ layer that contains stones mixed with a small amount of _____ organic matter.
| A．a; the | B．the; the | C．不填; 不填 | D．a; 不填 |
John has put on so much weight recently that his mother has to______ all his trousers to his measure.
| A．let out | B．give away | C．bring in | D．make up |
As we have planned, we’ll go to Beijing to attend her sister’s wedding party. We’ll also visit our mother school _______we go there.
| A．unless | B．when | C．once | D．even if |
He looked around and caught a man _______ his hand into the pocket of a passenger.
| A．put | B．to be putting | C．to put | D．putting |
The shop doesn’t open until 11 am, _______ it loses a lot of business.
| A．for | B．or | C．but | D．so |
The country life he was used to______greatly since the opening policy.
| A．changed | B．has changed | C．changing | D．having changed |