The house is dirty because it since they moved out.
| A．doesn’t clean | B．isn’t cleaned |
| C．hasn’t cleaned | D．hasn’t been cleaned |
—Have you got any particular plans for the coming holiday?
—Yes，________，I’m going to visit some homes for the old in the city.
| A．if ever | B．if busy | C．if anything | D．if possible |
Once a decision has been made，all of us should ________ it.
| A．direct to | B．stick to | C．lead to | D．refer to |
Einstein’s Theory of Relativity is so________ that most of us can not understand it.
| A．controversial | B．appropriate | C．abstract | D．ridiculous |
Art is influenced by _____ customs and faith of ____ people
| A．the; a | B．不填; a | C．the; 不填 | D．the; the |
--- John failed his final exam.
-- I’m not surprised at the news at all. _______, he is never seen busy with his lessons.
| A．Above all | B．In all |
| C．First of all | D．After all |