We will put off the picnic in the park until next week, ____ the weather may be better.
A. that B. where
C. which D. when
There are some health problems that, when ______ in time, can become bigger ones later on.
A. not treated B. not being treated
C. not to be treated D. not have been treated
______how others react to the book you have just read creates an added pleasure.
A. Hearing B. Hear
C. Having heard D. To be hearing
Let those in needthat we will go all out to help them.
A. to understand B. understand
C. understanding D. Understood
The engine just won't start.Something seems ________ wrong with it.
A.to go B.to have gone
C.going D.having gone
When I was little, my mother used to sit by my bed, ________ me stories till I fell asleep.
A.having told B.telling
C.told D.to tell