You should wear a shirt with long sleeves _________ you get burnt in the sun.
| A．in case | B．so that | C．although | D．because |
The office is too small for ten teachers________
| A．to work | B．working in | C．to work on | D．to work in |
He had no choice but________till his mother came back.
| A．waited | B．waiting | C．to wait | D．wait |
Mark woke up one morning to find both water and electricity________because of not being able to pay the bills.
| A．cut out | B．cut down | C．cut off | D．cut short |
There’re 103 elements found in nature, ________are metals.
| A．most of which | B．most of them | C．most of that | D．most which |
．I ________Mary in the park yesterday; we________each other since I left the college.
| A．met ; didn’t see | B．had met; hadn’t seen |
| C．met; hasn’t seen | D．met ; hadn’t seen |