I had some trouble____ complete sentences in learning English.

will Jenny be back I really miss her．—In a week．

In our school, some students are active______ some areshy, yet they can be good friends with one another.

look down upon Bob. He has his own advantage.— Oh, yes. _______ others are weak, he is strong.

The house, ______ was destroyed in the terrible fire, has been repaired.