I rarely have an occasion _______ I can spend a whole afternoon with my kids.
A.when B.that C.as D.where
________ is often the case with children, Tom was better by the time the doctor arrived.
A.It B.That C.What D.As
Fully _______ in looking after three small children, she cannot speak to you at the moment.
A.occupied B.being occupied C.occupying D.being occupying
There are some health problems that, if _______ in time, can become bigger ones later on.
A.not treated B.not being treated
C.not to be treated D.not having been treated
Though _______ money, his parents managed to send him to university.
A.lacking B.lacked C.to lack D.being lacked
―Tom doesn't seem so enthusiastic as he was two years ago.
―Yes. He's really reached a point in his career _______ he has to decide what to do next.
A.that B.when C.where D.which
