_______ jeans were invented over 100 years ago, they're still in fashion today.
| A．Because | B．If | C．Although | D．Since |
Tom was disappointed that most of the guests ______ when he ______ at the party.
| A．left; had arrived | B．left; arrived |
| C．had left; had arrived | D．had left; arrived |
—Would you like to go for a picnic tomorrow?
—Sorry, I have to _____ my homework.
| A．work on | B．put on |
| C．put out | D．take away |
—Why was Miss Lee angry this morning?
—Because Tom didn’t _____ his homework.
| A．hand out | B．hand in |
| C．give away | D．give out |
We are made ________ more confident by our teacher.
| A．to be | B．being | C．be | D．been |
He is an explorer ________ a sailor.
| A．so | B．but | C．or | D．rather than |