What will the weather be like tomorrow–It ______ be rainy, cloudy or sunny. Who knows

You__________buy a gift, but you can if you want to.

ys, scientists are working hard tofind a best way of treating addictions __________ drugs.

The girl had hardly rung the bellthe door was opened suddenly, andher friend rushed out to greet her. A.before B.until C.as D.since

Why did you go back to the classroom?- I left my friend Tom _______ there.[ ]