Is this your necklace, Mary? I ______ it when I was cleaning the bathroom this morning.
| A．came across | B．dealt with |
| C．looked after | D．went for |
Tony is said ________ to New York, and now he is studying medicine in a famous college in America.
| A．have gone | B．to have gone | C．going | D．to go |
Today the Red Cross provides a number of services for the public, such as helping people________, teaching first aid and providing blood.
| A．in need | B．in return | C．in preparation | D．in anger |
Everyone in the class is expected to________in the discussion.
| A．participate | B．attend | C．donate | D．declare |
Please post this letter in the post office nearby, and ______, I will get two tickets in the train station.
| A．in meantime | B．on the meanwhile | C．in meanwhile | D．in the meantime |
Many people are not________the danger of their children's bad habits, which lead to failing to make their dreams come true.
| A．well aware to | B．very aware of | C．aware that | D．well aware of |