This new kind of chemicals will help keep the air, soil and water________ from pollution.
| A．free | B．empty | C．loose | D．short |
to looking after her sick mother for two years,she badly needed a holiday.
| A．Having devoted | B．Devoted | C．To be devoted | D．To have devoted |
-There’s coffe and tea,you can have.
| A．either | B．each | C．one | D．it |
I failed in the fimal examination last term and only thenthe importance of studies.
| A．I realized | B．I had realized |
| C．had I realized | D．did I realized |
—Bill, if it doesn’t rain, we can go straight on and spend more time in Vienna.
—I just want to hear Mozart.
| A．Well done! | B．No problem. | C．That’s great! | D．That’s it. |
But for the sudden rainstorm, our trip to Hong Kong _____ a very pleasant one.
| A．was | B．would have been | C．would be | D．had been |