问题

Microblogs experienced rapid growth in 2011 in China, with the number of microblog operators, users and visitors _____ several times.

A:to increase
B:increasing
C:increased
D:increase

正确答案是：

同类题型

John is very ________-if he promises to do something, he’ll do it.[ ]

do you go to the Pizza Hut with your family — Oh, about once a month.

The lady is crazy _________ the beautiful clothes

Yellow can remind people a warm day.

No matter how _____, it is not necessarily lifeless.