-- Why bother? There is too much rubbish here. You’ll never pick it all up.
--- Maybe not. But at least this part of the park cleaner.
| A．was | B．will be | C．had been | D．is |
The question is _____easy, so everyone in our class can answer it.
| A．quite | B．rather | C．fairly | D．very |
Our lab is on the third _____ of a six—______ building.
| A．floor; story | B．floors; stories | C．ground; flat | D．apartment; ground |
The flowers ____ sweet in the garden in spring.
| A．smell | B．to smell | C．smelling | D．smelt |
-----when has the country been open to international trade?
-----1978, I suppose.
| A．Since | B．In | C．From | D．After |
At the meeting they discussed three different____to the study of mathematics.
| A．approaches | B．means | C．methods | D．ways |