Experts warn that global warming will cause climate changes, including more ______ floods, heat waves and droughts.

nstruction of the gym caused much noise,__________ it difficult for people nearby to sleep

Look! There are a lot of children onthe playground.

urprised to know that ________ two top students were caught stealing in thesupermarket Worse still, _______ third one was found fighting with others

Here is such a difficult text _____ none of us can understand.Here is such a difficult text _____ none of us can understand it.