________, we are better off and live a more convenient life.
| A．With the economy develops fast |
| B．With the economy developing fast |
| C．As the economy developing fast |
| D．As the economy develop fast |
--- Oh, dear. I forgot the air tickets.
--- You ______ something.
| A．have left | B．are always leaving |
| C．are leaving | D．always left |
Doing your homework is a sure way to improve your test scores, and this is especially true ____ it comes to classroom tests.
| A．before | B．since | C．when | D．after |
By the time you arrive home, I ____, so please don’t make any noise when you come in.
| A．shall have been sleeping | B．shall have slept |
| C．shall sleep | D．shall be sleeping |
It’s a bad practice to ____ children much money as a New Year gift.
| A．promise | B．permit | C．admit | D．allow |
____ the help of experienced career instructors, this type of job-hunting training ____ to be very efficient.
| A．By; has proved | B．With; has proved |
| C．Under; is proving | D．With; is proved |