The light will be thrown ______ the cause of cancer by research that is now in progress.
| A．to | B．upon | C．in | D．for |
---These suitcases are too heavy for me to move.
---Here, I’ll give you a hand _______ them.
| A．for | B．to | C．with | D．by |
If Mrs. Brown _____ our manager to attend the opening, he will certainly be glad to.
| A．agrees | B．advises | C．demands | D．promises |
People like to shop in the supermarket because they are interested in the ________ of goods on offer and can buy whatever they want.
| A．price | B．variety | C．value | D．amount |
His failure in the exam suggested that he ______ the teacher’s instructions.
A. can’t have followedB needn’t have followed
C mustn’t have followed D. shouldn’t have followed
Recent studies have discovered that fathers uniquely contribute to the development of their children, _____ in low income families.
| A．specially | B．definitely | C．specifically | D．particularly |