It’s important for Jim ______ the piano well, ifhe wants to be a musician.

.— I ‘ll ask our physics teacher to explain Newton’s Second Law of Motion, which she taught us yesterday.— That’s just _______ most of the students haven’t understood.

In the face of all these difficulties,we’re not discouraged and __________ good spirits. [ ]

I’m going to spend the holiday tomorrow. –______.

The biggest problem was thatthousands of travelers remained _____ outside because of the floods.