If you meet trouble, you can ______ your friends ________ help.
—I want to know if Maria ______ us in the fashion show tonight.—I believe if she ______ her homework, she will join us.
In our class, about ______ of the students ____ girls.
—How can we become good at playing basketball ?— ____ practicing it as much as possible.
(原创) Can you tell me _____________________?
-Tom has no difficulty passing the final exam.--________, and ____________.