Please give me ________envelope, I want to write a letter to my father.
| A．a | B．an | C．the | D．/ |
I invited my teachers __________ my birthday party.
A. to join in B. join in C. to join
I didn’t sleep well ________ the noise from that factory nearby.
A. because B. because of C. Unless
He failed the exam, ______ he tried his best.
A. because B. though C. So
The apple on the table __________ . Throw it away.
A. smell terrible B. smells good C. smells terrible
The more careful you are, themistakes you’ll make.
A. more B. few C. fewer