In the past twelve months the research members ______ the effectiveness of many materials in a home building.
| A．had studied | B．would study | C．studied | D．have studied |
When the news _____that he had been accepted by the college, he jumped with joy.
| A．broke out | B．came out | C．brought out | D．spoke out |
If To
m doesn’t realize his mistake, he will _____ one day.
| A．heart- broken | B．keep his word | C．get the hang of it | D．get into trouble |
Water ____________ oxygen and hydrogen..
| A．contains | B．is contained | C．includes | D．included |
Paper making began in China and from here it _____ to Europe and North America.
| A．spread | B．grew | C．carried | D．developed |
My father knows clearly that smoking is bad for his health, but he just cannot____________ it.
| A．have fun with | B．get rid of | C．look forward to | D．get away with |