People exposed to radiation are more_______ to suffer from certain forms of cancer, which can be ______ but can’t be ______at present [ ]

Let’s go Dutch for this supper, OK—— No, ____________ this time, as a reward for allyour help.

Is this research centre _____ is full of modern equipment you always mention.

下列各句中，句式特点与其他三项不同的一项是（）

From the next term, parents ______ e-mailsinstead of letters, to be informed of their children’sexam results.