26. Vietnamese students have fewer vacations than American ones.
=> American students have .....................................................................
27. It is necessary for you to wash your hands before meals.
=> You need .....................................................................
28. It is such good weather that they are going for a picnic.
=> The weather .....................................................................
29. What was Mr Tan's weight?
=> How .....................................................................
30. He looks after sick people.
=> He takes .....................................................................