—I guess you can buy such a smart phone for 300 dollars. —I could just two months ago,but the price ________ by 20%.
I'll let you know as soon as he _________.
I want to know if they _____ the spring sports meeting next month. If they ___ it, I must get ready for it.
The teacher asked me ________ I needed any help.
-- You are not going out today, are you? --_______ I want to go shopping.
--Is Jim at school today? -- No, he's at home ______ he has a bad cold.