There has to a well-developed system that can give people a warning when a tsunami is _______ the way.
| A．have…in | B．be…in | C．have…on | D．be…on |
The teacher is much kinder to the top students, ______ makes the others unhappy.
| A．that | B．which | C．when | D．who |
Too much work and too little rest ____ to his illness.
| A．causes | B．forms | C．leads | D．makes |
Some experts demanded that children _______ time for sleep and play.
| A．give | B．should give | C．would be given | D．be given |
This type of jewelry is ______, so you’d better buy some as soon as possible.
| A．valueless | B．worthless | C．high | D．priceless |
_____ has already been pointed out , grammar is not a set of dead rules.
| A．As | B．It | C．That | D．Which |