.He is good at English, ______we all know.
| A．that | B．as | C．whom | D．what |
The company _______ a rise in salary for ages but nothing has happened yet.
| A．has been promising | B．had promised | C．promised | D．promises |
—Why does the river smell terrible?
—Because large quantities of water__________．
| A．have polluted | B．is being polluted | C．has been polluted | D．have been polluted |
Months ago we sailed ten thousand miles across the open sea, which_____ the Pacific,and we met no storm.
| A．was called | B．is called | C．had been called | D．has been called |
—Why didn’t you buy the calculator?
—I ______, but Mother ______ allow me.
| A．would want to; didn’t | B．had wanted to; didn’t |
| C．wanted to; wouldn’t | D．had wanted to; wouldn’t |
—Tom, you didn’t come to the party last night?
—I ______, but I suddenly remembered I had homework to do.
| A．had to | B．didn’t | C．was going to | D．wouldn’t |