Ⅰ.单项填空(共15小题；每小题1分，满分15分)
请认真阅读下面各题，从题中所给的A、B、C、D四个选项中，选出可以填入空白处的最佳选项。
1．(2015·南京高三学情调研)In order to encourage participation in class activities, teachers may call on students ________ whether they have raised their hands.
A．regardless of B．instead of
C．in terms of D．on top of
2．(2015·南通高三测试)—I’ve sold my first painting!
—This is really ________！ Someone actually thinks your painting fantastic.
A．everything B．anything
C．nothing D．something
