-When did the Great Wall __________？
-In the Qin Dynasty.
| A．come into being | B．come into use |
| C．come into effect | D．come into power |
Some time after the rockets and the space shuttle are _____, the rocket will _____ the space shuttle and ____ the sea.
| A．set sail; broadcast; drop in | B．ruled out; orbit; show up |
| C．stepped up; survive; fall for | D．launched; separate from; fall into |
---May I look at the menu for a little while?
---Of course, ______ sir.
| A．don't worry | B．it doesn't matter | C．enjoy yourself | D．take your time |
Considering his health, I advise him to ______ an hour or two each day to work out.
| A．set about | B．set off | C．set up | D．set aside |
Riding bikes has advantages __________ driving cars ________ many aspects.
| A．above; in | B．over; in | C．on; on | D．with; on |
How can we get this language point _____ to the students.
| A．down | B．round | C．across | D．into |