How many birds can you see in the trees?—I can see birds in them.

We are leaving for Beijing _____ the morning of August 12th.[ ]

Amy , I would like your uncle to help me repair the computer. —Sorry, he _____help you today . He won’t come back until tomorrow.

The factory_____I worked last year is just the one I visited yesterday.

I don’t think one can keep healthy _____ taking enough exercise.[ ]