Mum is coming. What present _____ for your birthday?

The workers are loading the goods into a car, _____, they are loading the car with goods.

Philip is a New Yorker, ___, he lives in New York.

We were lost in the forest; ____, it became dark and began raining.

Arabic is written in the opposite direction to English, _____, from right to left.

一 Would you like to go shopping with me right now?
一 I'm sorry, but it's so late now. _____, it is raining so hard outside.

It is really an exciting game. ______the game?      

The pull of gravity depends upon size, _______, upon mass. An object, whether its mass is big or small on the earth, ________in weightless conditions, like the outer space.