Jonny, I can't believe how much you have changed! You ________ at least one foot!

A．grow

B．grew

C．have grown

D．are growing

Friends are angels who lift us to our feet ________ our wings have trouble remembering how to fly．

A．unless

B．because

C．though

D．when

Some seemingly harmless blogs might become harmful when ________ on the Internet by millions of people．

A．to read

B．reading

C．read

D．being read

In English class, our teacher often creates an environment ________ we are given the opportunity to solve problems ourselves．

A．when

B．which

C．where

D．that

Thank you so much! But for your text message, I ________ home without my ID card this morning．

A．would have left

B．would leave

C．had left

D．left

When Helen began looking for a job after college, she found that she couldn't get ________ without work experience．

A．it

B．one

C．that

D．this

Most of the telephone lines ________ in the hurricane last night, and so today it's almost impossible to get through to anybody．

A．destroyed

B．had destroyed

C．were destroyed

D．had been destroyed

In order to assess ________ the treatment will fit your lifestyle, please take a moment to answer a few questions about yourself．

A．what

B．how

C．why

D．where

We shouldn't have come north for Christmas vacation．If we ________, we wouldn't be stuck in the snow right now．

A．wasn't

B．didn't

C．hadn't

D．weren't,

Why do some rich people steal things ________ they could easily afford to buy them?

A．unless

B．before

C．if

D．when