I don’t like physics ______ it’s too difficult for me.

If their marketing plans succeed, they _____their sales by 20 percent. [ ]

Excuse me, Mum. When can we have dinner —Not until it ▲ in half an hour.

What we have been doing may not do us any good, but______ it will benefit us or others,we’ll stick it out.

I wonder _____ Mr Black changedhis mind to take part in the movement — After he listened to the speech by MrKing