Microblogs experienced rapid growth in 2013 in China, with its operators, users and visitors several times.
| A．increase | B．increased | C．increasing | D．to increase |
Special attention should be paid to ________ forests from fires in winter.
| A．protected | B．protecting | C．protects | D．protect |
________ is no doubt _______ Mo Yan, this year’s Nobel Prize winner in Literature, ever did so much on his way to success.
| A．It; whether | B．There; if |
| C．There; whether | D．There; that |
The fields where crops used to be grown ________ for building now.
| A．have used | B．have been used |
| C．are being used | D．are used |
I would appreciate ______________ if you could come to my birthday party.
| A．you | B．this | C．that | D．it |
I failed in the job interview and only then _____ the importance of learning English well.
| A．I realized | B．I had realized | C．did I realize | D．had I realized |