The year 1949 the birth of a new China．
| A．saw | B．watched | C．noticed | D．1ooked |
_______ the house is empty, memories flood my mind of a time when it was filled with life.
| A．Since | B．Unless | C．As if | D．Even though |
By the time a child is five, he _______ hundreds of hours of television.
| A．will watch | B．will have watched | C．had watched | D．is watching |
There is nothing wrong with using a credit card for purchases. It’s more _______ than carrying loads of cash.
| A．convenient | B．valuable | C．sensitive | D．innocent |
If not _______, you’re allowed to return everything within 10 days for a full refund and no further duties.
| A．to satisfy | B．being satisfied | C．satisfied | D．satisfying |
Don’t touch your eyes, nose and mouth, because they aren’t covered by skin and can _______ the virus more easily.
| A．take up | B．pick up | C．make up | D．set up |