单项选择题
—The research on the new bird flu virus vaccine is challenging and demanding. Who do you think can do the job — () my students have a try
A. Shall B. Must C. Will D. May
单项选择题 The driver began to speed up to for the hour had lost in the traffic jam.()
单项选择题 —What was your impression of last nights lecture —Speaking () , I thought it was rather boring.
单项选择题 Now that we () all the money, it's no use turning on me and saying it's all my fault.
