题目内容
Old Richard, ill so long, is losing his memory and needs to be attended to.
| A．to be | B．being | C．having been | D．to have been |
C
解析试题分析：考查非谓语动词。老理查德，已经染病许久，正在丧失记忆力并需要得到照料。动词不定式表示将来，根据句意可知，染病是已经发生的事情，排除A、D；当两个动作先后发生时，常用having done，相当于一个原因、时间状语从句，这里相当于because he has been ill so long，故选C。
考点：考查非谓语动词
I have learned that clothes ______ online are of poor quality.
| A．bought | B．buying | C．to buy | D．having bought |
The Shanghai Center, to be environmentally friendly, will be completed this year.
| A．designed | B．designing |
| C．being designed | D．having designed |
Lance Armstrong is believed ______drugs in the past competitive cycling races.
| A．to take | B．to be taking | C．to have taken | D．to be taken |
________at the cafeteria before, Tina didn’t want to eat there again.
| A．Having eaten | B．To eat | C．Eat | D．Eating |
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| A．to get confused | B．getting confused |
| C．to get confusing | D．getting confusing |
_____ in Harvard is _____ most students wish for.
| A．Being educated; what | B．To educate; that |
| C．Eduacted; which | D．Educating; everything |
Volunteering， as a way of building character, is popular among young people in western countries．
| A．seeing | B．to see | C．seen | D．being seen |