By the time he retires, professor Baker _____ for almost forty years．
| A．will have taught | B．had taught |
| C．has taught | D．is teaching |
Every evening after dinner, if not from work, I will spend some time walking my dog.
| A．being tired | B．tiring | C．tired | D．to be tired |
The loss has not yet been ______ accurately, but it is believed to be well beyond a hundred million dollars.
| A．calculated | B．considered | C．completed | D．controlled |
—Why does the lake smell terrible?
—Because large quantities of water in the lake .
| A．have polluted | B．is being polluted | C．has been polluted | D．have been polluted |
John plays basketball well, _______his favorite sport is badminton.
| A．so | B．or | C．yet | D．for |
The day________ he was looking forward________ in the end.
| A．when; to come | B．which; to come |
| C．when; to came | D．which; to came |