—When will the second class begin?
—________ two minutes.
| A．For | B．At | C．In | D．After |
I’m very proud of that Beijing is one of __________ cities in the world.
| A．big | B．bigger | C．biggest | D．the biggest |
—Who helped Mark with his English?
—_________, he taught himself.
| A．Anybody | B．Nobody | C．Somebody | D．Everybody |
Qingdao is a good place for summer vacation. My father ___________ there several times.
| A．has gone to | B．have gone | C．have been to | D．has been |
Remember to wash your hands __________ you have meals.
| A．before | B．until | C．though | D．unless |