I hear it won’t be ______ he graduates from the university.
| A．before long | B．long ago | C．long after | D．long before |
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 |
Math is_______ mathematics.
| A．short for | B．in short | C．short | D．shortage |
Mary wanted to travel around the world all by herself, but her parents did not___her to do so.
| A．forbid | B．allow | C．follow | D．ask |