1) Where is David? He (is) at school. Classes begin at 8 and he's never late.
2) I'm absolutely sure! They (arrived) yesterday. Tom showed me his train ticket.
3) Students (have got) sick and tired of grammar. I know it's kind of boring.
4) Alice (is) looking for a job because she finished college last year.
5) She (is coming) this evening, but she also had some work to do.
6) I don't believe you - it (is not) true.
7) She (will come) soon. I have just phoned her.
8) This dress (costs) more than $50.
9) We (may be going) to Spain this year. We haven't decided yet.
10) It (is raining). Take your umbrella.