19. --- Could you tell me how the sea sand comes about ?
--- Sea waves dash against the rock. In this way , the sea sand ___ .
| A．comes into use | B．comes into office | C．comes into effect | D．comes into being |
I have experienced quite a number of cases ______ I really wanted to help but could not find anything to _______.
| A．when; put on my hands | B．that; put my hands on |
| C．where; put my hands on | D．in that; put on my hands |
An appropriate amount of temporary pressure can ______ a kind of motivation to do something well, but once it becomes constant or permanent, psychological problems are likely to _______.
| A．act as; rise | B．play as; appear | C．work as; raise | D．serve as; arise |
The football match was really _______. No one was sure which side ________ until the last moment.
| A．firm; would win | B．exciting; was winning |
| C．tight; would win | D．close; was about to win |
People exposed to radiation are more _______ to suffer from certain forms of cancer, which can be ______ but can’t be ______at present
| A．more likely; treated; cured | B．more probable; treated; cured |
| C．more possible; cured; treated | D．more likely; cured; treated |
When the police broke into the room, they were terrified at the scene: a middle-aged man lying on the floor, with a cupboard _______him, his feet and hands ______ tight with electric wires, his throat _____ open and a pair of scissors ______ deep in the chest.
| A．covered; tied; cut; cut |
| B．covering; tying; cutting; cutting |
| C．covering; tied; cut; cutting |
| D．covered; were tied; cut; cutting |