There are many theories that() to be able to predict whether youwill give birth to a girl or a boy.

There are many things whose misuse is dangerous, but it is hard to think of anything that

There are many superstitions in Britain, but one of the most 【B1】 held is that it is unluc

I often go to that park because there are always so many people.A.normallyB.seldomC.conti

There are many theories about the beginning of drama in ancient Greece. The one most【C1】__

There are many theories that______to be able to predict whether you will give birth to a g

Researchers know there are many drugs that can alter our bodily processes in such a way【C1