— Why does the lake smell terrible?
— Because large quantities of water______.
| A．have polluted | B．is being polluted |
| C．has been polluted | D．have been polluted |
A new manager will come to take ________ charge of this company, which was in ________ charge of Mr. Wang.
| A．the; the | B．/; / | C．the; / | D．/; the |
Don’t ________. Try again, and you will succeed.
| A．lose your heart | B．lose the heart |
| C．lose hearts | D．lose heart |
He was very rude to the customs officer, ________, of course, made things even worse.
| A．who | B．whom | C．which | D． what |
_______ is reported in the newspapers, talks between the two counties are making progress.
| A．It | B．As | C．That | D．Which |
The novel Dream of Red Mansions《红楼梦》 _______ reading again and again.
| A．is worth | B．is worthy of |
| C．worth | D． worth of |