The first textbooks ______ for teaching English as a foreign language came out in the 16th century.
| A．to be written | B．written | C．being written | D．having written |
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.It is too bad for someone in such a high _______ in the government to behave badly in public.
| A．position | B．situation | C．profession | D．condition |
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----Why are your hands so dirty?
----I ____________in the garden.
| A．was working | B．have worked | C．worked | D．have been working |
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If I can help ____, I don’t like working late into the night.
| A．so | B．that | C．it | D．them |
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---Why not open the windows to let _____cool air in?
---I’d rather you didn’t. ________air in out town is terribly polluted.
| A．a; The | B．/; The | C．/ ;/ | D．the; / |
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.----Are my clothes too casual?
----No. You can go ____you are.
| A．as | B．what | C．that | D．where |