__ it to clear up tomorrow, the tourists would climb to the top of the mountain to see the sun __.

It is usually warm in my hometown in March, but it _____ be rather cold sometimes.

—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?

.--I sent him a most interesting story book  by mail this morning. --You____so; he's coming tomorrow morning.

If you ______ earlier, you ________ him.