She is a quiet girl at school,but sometimes she _____ be very naughty.
The tree over there is so tall that I suppose it _______ nearly twenty metres.
On arrival, the famous movie star found himself _______ by the enthusiastic fans.
Modern science has given clear evidence ________ smoking can lead to many diseases.
When the news came ________ the war broke out, he decided to serve in the army.
There is clear evidence ________ the most difficult feeling of all to interpret is bodily pain.