David often helps Sandy ___ her Maths, he also shares his school things ___ her.
| A．to, to | B．with, to |
| C．with, with | D．to, with |
Mom, I’m old enough to wash ________ own clothes and ________. You can have a rest after work.
| A．my; your | B．my; yours | C．your; my | D．yours; mine |
Do you know a spaceship flies at about nineteen kilometers ________ second?
| A．the | B．a | C．/ | D．an |
— Morning, boys and girls! Please try your best in today’s exam! Good luck to all of you!
— ________
| A．Sorry, I won’t. | B．Never mind . | C．Thanks! | D．Congratulations! |
—Sir, could you please put out your cigarette? This is a smoke-free (无烟的) school.
—＿＿＿＿＿＿
| A．I'm sorry about this. | B．No problem. |
| C．Sure, I'd love to. | D．Never mind. |
—How often do you chat with your friends online?
—. I'm busy with my study.
| A．Only one month. | B．About twice a month. |
| C．Almost every day. | D．Maybe in two weeks. |