If you keep ______, you will succeed sooner or later.A、to tryB、triedC、tryingD、tries

If you never review your lessons, you will only have yourself to ______ if you fail in you

It will help you to understand the article if you____________

If you are going out for walk, Ill come along and keep you_____.A．companyB．companionC．comp

If you __________ with something, you keep trying to doit and do not give up, even t

______you keep on practicing, you will certainly play it well.A．WhereasB．AlthoughC．As long

If you act in______of international agreement, you will be sued（起诉).A．invasionB．supportC