You’ve dropped ________ “s” in the word“necessary”.— Oh, ________ letter “s” is doubled.

I don’t needanew dictionary because I bought this a year ago.

have you got my email I sent you a birthdaycard yesterday.—Oh, really! I haven’t ＿＿＿my mailbox yet.

Da RunFa Supermarket is _______ on weekends. We can do some shopping there on weekdays.–Oh, no. It ________ ever since last Friday.

There are floors in my house and my bedroom is onthe______floor.