6.The boss asked his secretary to go to a concert and she ______ his invitation with pleasure.
A. received B. accepted C. rejected D. refused
7.This tool machine is capable ______ being improved.
A. to B. in C. with D. of
8.We ______ very close，but things have changed recently.
A. used to be B. are used to being C. are used to be D. were used to being
9.He found it difficult to make himself ______.
A. understood B. be understood C. understand D. to understand
10.It rained hard yesterday， ______ prevented me from going to the park.
A. that B. which C. as D. it
6.正确答案：B答案解析：译文：老板邀请他的秘书去听音乐会，她愉快地接受了邀请。此题考查词汇。receive表示客观“收到”;accept表示主观“接受”;reject意为“抛弃。 拒绝”;refuse表示“拒绝”。从句中的with pleasure可知秘书“接受”了邀请。答案为B.
7.正确答案：D答案解析：be capable of：能够，有能力。
8.正确答案：A答案解析：表示“过去常常”用used to do(be)。 译文：我们过去非常亲近。但近来事情已经发生变化。
9.正确答案：A答案解析：make sb done： 使某人被……。
本题中的make himself understood意思是“使他自己被理解”。句中的it是形式宾语，make himself understood是真正的宾语。句意：他发现让别人理解自己很困难。