根据句意，用括号内所给单词的适当形式填空。You ________ (simple) can’t imagine how terrible the earthquake is!
Flying across the Atlantic for the first time was a great ________ (achieve).
A true friend can help you get out of ________ (sad) when you’re unhappy.
You should think________ (two) about this, or you’ll regret (后悔) in the future.
I looked into the classroom but I found it /′empti/．
He goes on the Internet to check the times of trains and buy /'tikits/．
We [prə'vaid]books，and we set tests every week to check your progress．
The tiger is a very /laːdʒ/animal and usually lives alone．
That is almost one /fifθ/of the world's population．