It is no doubt that once ____ this city, you’ll find that there is so much surprise waiting for you to discover.
Jim is good at English. He often gives me some useful ____on how to read English.
We are all____ of the poem “Children, quickly, hold mother’s hands” and moved by it.
Scientists say it may be five or six years_______it is possible to test this medicine on human patients.
You have to ____smoking. It isn’t good for your health.
---Must he remember everything he has learned in the class? ---No, he _____.