—______ will you come back from Shanghai? —In one month.
| A．How long | B．How often |
| C．How soon | D．How fast |
--- The dish looked bad, but it_______ OK.
--- So it's not right to judge a man by his appearance.
| A． tastes | B．was tasting | C．was tasted | D．tasted |
-- I will buy you a new bike if you learn how to swim this summer.
-- Is that a _______? I'm sure I'll get the bike.
| A．chance | B．trick | C．promise | D．treat |
--- We'll visit the Summer Palace_______ there is a heavy rain tomorrow.
--- OK ! Boating on the lake must be interesting.
| A．unless | B．since | C．until | D．if |
You can try_______ second time if you fail_______ first time.
| A．the; the | B．a; the | C．the; a | D．a; a |
— I visited the Purple Mountain Observatory last Sunday.
—______ Why didn’t you tell me earlier?
| A．You did? | B．I hope so. |
| C．Have a good time! | D．It’s so kind of you. |