Some scientists believe that ________ is no doubt ________ a cure for AIDS will be found.
. The person we spoke to ____ no answer at first.
. Before he went abroad,he spent as much time as he _____ English.
. With all factors ______, we think this program may be better than all he others n achieving the goalA, being considered B. considering C. are considered D . Considered
. The celebration started at ten in the morning and____about two hours.
. Yesterday I missed my feet on the stairs and had a bad fall. Luckily it was nothing serious ___.