—How much of his speech did you think you understand?—_____ .I wish I had worked harder.

There are many green trees on ________sides of the street

_______ is believed, all the scientists subscribe to the view ______ the increase in the earth’s temperature is due to the burning of fossil fuels to produce energy.

—Have you got any books on English grammar? I’d like to borrow       ． —Yes, here you are．But you must return it by Friday．

What sense do you think ____ will_____ to argue about it?