The scientists are now trying to discover what use could be ________ such material.
| A．made out | B．made up | C．made of | D．made from |
Whenandwherethistookplace_________stillunknown.
| A．are | B．were | C．is | D．has |
Ourfamily____ahappyone.
| A．is | B．are | C．was | D．were |
Morethanoneanswer _______tothequestion.
| A．havebeengiven | B．hasbeengiven | C．weregiven | D．hadgiven |
Thewounded_____goodcareofherenow.
| A．istaken | B．arebeingtaken | C．aretaking | D．istaking |
NeitherhenorI____fortheplan.
| A．am | B．are | C．is | D．were |