Miss Green is popular with her students as she always tries to make them _________ in her classes.
| A．interested | B．interesting | C．interest | D．to interest |
-- The classroom looks like a mess!
-- Yes, but who left the waste paper ______ around?
| A．lie | B．to lie | C．lay | D．lying |
-- I think we'll give Bob a ring.
-- We ______ . We have been out of touch with him for ages.
| A．will | B．may | C．have to | D．ought to |
Honey, stay outside and ______ a few minutes; then we'll go to church together.
| A．hang around | B．hang up | C．hang on | D．hang out |
-- Why didn't you go camping with us?
-- But I ______ all about it!
| A．forget | B．was forgetting | C．have forgotten | D．had forgotten |
-- When do you need to pay the balance?
-- ______ December 31.
| A．In | B．By | C．During | D．Within |