Trees are good for human being. We can’t plant them __________ many.
13.Many medical scientists are racing__________time to find a cure for H1N1 as soon as possible.
12.Alice is kind, careful, energetic and has much experience of looking after children. In a word, she is very_______.
11.--- Where did Mary’s parents buy the beautiful souvenir? --- It was in the same village_________they spent their holidays last year.
10.____by the beauty of the piano music, the audience almost forgot to applaud when the pianist finally finished it.
9.Young adults generally make their own choices about__________job to take.