1.Children should speak to old people______(polite).
2.Don't open your books.Keep them________(close).
3.At the ________(begin)of this term,we had a picnic.
4.Don't throw the old watch away.It is still____.(use)
5.Most_____(country)use satellites to send and receive messages.
6.My sister is_______(happy)now because she lost her money.
1.Children should speak to old people politely.2.Don't open your books.Keep them closed.3.At the beginning of this term,we had a picnic.4.Don't throw the old watch away.It is still useful.5.Most countries use satellites to send and receive messages.6.My sister is unhappy now because she lost her money....
