Smiles around the world _____ be false, _______ other feelings like anger, fear or worry.
| A．must; hide | B．shall; hiding |
| C．may; hide | D．can; hiding |
It will be more than 100 years ____ the country begins once again to look as it did before.
| A．when | B．since | C．before | D．that |
The situation is more _________ than ever. I’m _______about what to do next.
| A．puzzled; puzzled | B．puzzling; puzzling |
| C．puzzling; puzzled | D．puzzled; puzzling |
– Can you tell me ___________?
– An engineer from Jinan Iron and Steel Plants.
| A．what your friend is | B．who your friend is |
| C．what is your friend | D．who is your friend |
It is requested that each of the teachers invited ______ a performance at the. party.
| A．should give | B．will give | C．has to give | D．must give |
He was asked to _______the facts just as he remembered them.
| A．set down | B．set out | C．set up | D．set about |