连词成句。1. David , day , has , today , busy , a (.)

2. ready , they , lunch , are , for (.)

3. join , want , does , to, he , us (?)

4. to , it's , homework , me , time , do, my , fo r(.)

5. goes , Sam , on , eight , foot , to , at , school (.)
1. David has a busy day today.
2. They are ready for lunch.
3. Does he want to join us?
4. It's time for me to do my homework.
5. Sam goes to school on foot at eight.