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
Over the little girl's bed _____ nothing but a few small toys.
A．hang B．hangs C．hanged D．hanging
For more information about Cambridge, _____ our website at www. Cambridge, org.
A．visit B．visiting C．to visit D．visited
——Did you find the missing couple in the mountain yesterday?
——No, but we _____ to get in touch with them ever since.
A．have tried B．have been trying C．had tried D．had been trying
I think you should go back to your _____ plan, which is much more practical than the present one.
A．random B．original C．abstract D．ridiculous
——Jim is addicted to novels recently.
——Yes, that might _____ why he did so badly in the last test.
A．answer for B．apply for C．account for D．call for
