great efforts, we failed to carry ourplans through, which made us very disappointed

I have two pens. One is red, and ________is black.

No one except my parents _____anythingabout it.

ma paid a visit to China in November, 2009,_______, needless to say, must strengthen the Sino-US ties

Excuse me, how can I get to the post office—Gothe bridge and turn left. Walkthe museum, and you’ll see it.