She is too thin. She _______ gain some weight but she ______ too little. 

In crowded places like_____airports and railway stations,you _______ take care of your luggage.

Great efforts to increase grain production       if food shortages are to be avoided.

I left very early last night, but I wish I _____ so early.

If Greeks and Turks had not helped each other after the earthquakes five years ago,they____ mortal enemies instead of friendly neighbors later on..