Excuse me, have you seen _______ umbrella here?— Yes. Is it _______ beautiful blue one? I saw it here just now.

Jim arrives ______ London ______ the afternoon of December 5th .[ ]

There are 60 students in my class and 44 of them use weibo veryoften.—44? That means about_______of your classmates are weibo users, right?

There were different kinds of dinosaurs in the word in the past.

I lost my friend’s bike, and I really don’t know ________.