An increasing number of students,year by year,across China _______ hard to realize their dream of studying abroad.
Mr Li required the computer equipment referred ________ used in every classroom.
— May I stop here? — No, you _____.
Please open the window, _____?
. You _____ return the book now. You can keep it till next week if you like.
The plant is dead. I _____ it more water.