What I need is ___________ book that contains ____________ ABC of oil painting.
| A．a; / | B．a; the | C．the; an | D．the; / |
He wondered ________ his son was getting along with the experiment.
| A．when | B．what | C．how | D．which |
In 1492 Columbus and his crew arrived ______ was so-called the New World by the westerners．
| A．in what | B．in which | C．what | D．where |
—It is _______he often fails in exams_______ makes his parents worried about him.
—So, he has to work whole-heartedly.
| A．what, that | B．that, what | C．that, that | D．/, that |
In some countries, ______ is called “equality” does not really mean equal rights for all people.
| A．that | B．what | C．which | D．how |
The police were seeking more information to find out ______ the rich merchant.
| A．who was it that killed | B．who it was that killed |
| C．it was who killed | D．who was it killed |