The sale assistants are so ____; they spend more time chatting to each other than serving customers.
A.helpless
B.unhelpful
C.helping
D.helped

Most of the theories on the issue are ____.
A.opposing
B.opponent
C.confronting
D.conflicting

Tomorrow we can expect to see an end to the ____ rain in the region, but it will remain cloudy.
A.hard
B.heavy
C.strong
D.rough

A scientific hypothesis is tested in a series of ____ experiments.
A.controlled
B.limited
C.theoretical
D.supervised

After ____ attempts, Michael finally passed his graduation examination.
A.repetition
B.repeated
C.repeatable
D.repeating

That English will become dominant in most scientific fields is ____.
A.predicting
B.predictable
C.on predictions
D.to predict

Their flat is decorated in a ____ combination of colour.
A.tasteful
B.sweet
C.delicious
D.tasty

He is ____ listening to his sister’s advice.
A.bored in
B.tired in
C.tired of
D.interested with

When they let us go in, we ___ outside the exam room for over half an hour.
A.had been standing
B.have been standing
C.have stood
D.are standing

By the time I came home, my mother _______ for the meal.
A.was preparing
B.prepared
C.prepare
D.had prepared