It will be at least three years _______ weget to meet again

Two or three years ago this kind of glasses _______ a favorite for some time, but now it _______

Excuse me, Miss Li. Where will you take _____ trip — I’ll travel to a famous island of _____ Pacific Ocean.

lot of difficult problems________,the manager felt worried all the time.

Sam spends two hours _______ his homework every day.