Many people have been ill from a strange disease these days, _____ we’ve never heard of before.
| A．it | B．that | C．one | D．this |
_____ Barbara Jones offers to her fans is honesty and happiness.
| A．Which | B．What | C．That | D．Whom |
The most delicious cake in the world____ by mom. Please wait an hour to enjoy it.
| A．makes | B．is made | C．is being made | D．is making |
It can’t be a(n) _____ that four jewelry stores were robbed in one night.
| A．accident | B．coincidence | C．incident | D．chance |
Distance learning is being _____ in several countries to help children in remote rural schools obtain higher education.
| A．attended | B．adopted | C．adapted | D．admitted |
But for their common interests, they_____ cooperated so smoothly in the investigation of the case.
| A．could have | B．will not have | C．could not have | D．have not |