. He ______to help me work out the problem, but I’d prefer to depend on myself.
| A．managed | B．offered | C．suggested | D．refused |
The scientists have made _______ possible for us to communicate with each other more easily.
| A．it | B．that | C．this | D．them |
You’d better your score and see if you have passed the exam.
| A．add up to | B．add to | C．add up | D．Add |
The second book ________ I want to read is Business at the Speed of Thought.
| A．which | B．that | C．what | D．As |
What the public is about is whether medical workers and scientists will be able to find a cure for the new disease in a short time.
| A．concerning | B．concern | C．concerned | D．to concern |
It was _____ terrible earthquake and _____ number of people who were killed reached more than 20,000.
| A．a; the | B．the; a | C．the; the | D．a; a |