I can’t remember how the tune goes, ______ I’ll recognize it when I hear it.
| A．so | B．but | C．because | D．unless |
29．Someone________his car in front of my house and it is blocking my driveway.
| A．has parked | B．is parking | C．parked | D．had parked |
28．The film is very humorous but_________can be enjoyed unless you understand English culture.
| A．everything | B．something | C．nothing | D．Anything |
27．---Your composition is full of mistakes.
---I wish I_________more careful.
| A．would have been | B．had been | C．would be | D．Were |
26．______life began on the earth is one of the biggest puzzles to scientists.
| A．How | B．What | C．Where | D．That |
25．---Let’s throw a surprise party for mom’s 50th birthday.
---That’s a good idea. We________several of her friends.
| A．invite | B．have invited | C．are inviting | D．will invite |