21．—Why do you suggest the West Lake?
—I believe __beauty of nature there will make __excellent impression upon you.
A．the; the B．the; / C．a; an D．the; an
22. Hurry up! The train _____ .You know it _____ at 10:30a.m.
A leaves; leaves B is leaving; leaves
C leaves; is leaving D is leaving; leaving
