Because of H7N9 bird flu, all the chicken markets in Shanghai have been closed and won't open until further ________.

Butterflies ______ a sweet liquid produced by flowers, which bees and other insects collect.

(2013·高考江苏卷)Team leaders must ensure that all members ________their natural desire to avoid the embarrassment associated with making mistakes.

—How did you find the film The Flowers of War?—It's very moving. I couldn't ________ my tears.

Possibly encouraged by Liu Xiang, a number of students want to have a try in the        hurdle race.