The Smiths don't usually like staying athotels, but last summer they spent a few days at a very nice hotel by ________ sea.
| A． | /; a | B． | the; the | C． | /; the | D． | the; a |
--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 |
—Miss Wang，I feel very nervous with the competition approaching.
—________. As long as you can finish it，it is a victory.
| A．Take your time | B．Take it easy | C．No problem | D．It’s hard to say |
Since our country has so many good table tennis players, we have to ______ the best ones to take part in the game.
| A．rely on | B．depend on | C．judge on | D．decide on |
— What has Jack been doing recently?
—I don’t know _____ care.
| A．nor I do | B．nor do I | C．nor am I | D．nor I am |
Such a custom came into _______ long ago.
| A．being | B．use | C．service | D．existence |