220，309 should be read____________．
| A．two thousand and twenty thousands，three hundred and nine |
| B．two hundred and twenty thousand and three hundred and nine |
| C．two hundred and twenty thousands and three hundred and nine |
| D．two hundred and twenty thousand，three hundred and nine |
.The apple ___very sweet.
| A．is tasted | B．taste |
| C．tastes | D．are tasting |
Newly-born babies ___in hospital.
| A．are taken good care | B．are taken good care of |
| C．take good care of | D．take good care |
.How dirty the tables are! They need___.
to cleanB. clean
C.cleaning D. Cleaned
The pot ___ for ___ hot water.
| A．used; keeping | B．was used; keeping |
| C．is used; to keep | D．are used; keep |
The flowers _______often.
| A．must be water | B．must be watered |
| C．must watered | D．must water |