__ has your friend been to the Great Wall?—Twice.[ ]

I hear Mr. Brown will be our new manager. —-Right. His experience him for the position.

I am told to get there before seven tomorrow. —Well, you ______ to catch the first early bus.

I saw Helen at the party last month. It _________ a year since we met last time.

Aboutof the workers in the factory were born in the.