Large quantities of solid fuel ______consumed every day and too much carbon dioxide is sent into the air, which in turn _______ the going up of temperature.

Youspeak very good French! —Thanks I__________ French in Sichuan University for four years

can see, Peter is very happy, so he___________ have passed the exam. After all, it’s not difficult at all.

The students in the class were _____ four groups before they started the game.

ccording to the regulation, you canonly borrow a_______of ten books from the library.