_______ the smoggy weather, the central government has taken action to deal with it.
| A．As with | B．As for | C．As if | D．As though |
The twin brothers stand under the tree, ______ and say nothing.
| A．puzzled | B．puzzling | C．being puzzling | D．being puzzled |
________ that I was puzzled.
| A．So difficult a question did he ask me |
| B．Such difficult a question did he ask me |
| C．Such a difficult question he asked me |
| D．He asked me a so difficult question |
The factory, including its machines and buildings, ______ burnt to ashes during the fire.
| A．is | B．are | C．was | D．were |
– Are you cleaning my room?
– I can’t help _____．I can’t bear seeing people’s room in a mess!
| A．it | B．this | C．anything | D．so |
He thought that painting copied by a modern artist was ______ great value and bought it ____ over a thousand dollars.
| A．at; for | B．of; for | C．of; at | D．for; by |