.
I wonder __________ that made him so upset yesterday.
| A．it was what | B．what is it | C．what it was | D．it what is |
That George will marry Alice, ______ has not been announced yet, has spread around.
| A．that | B．which | C．what | D．who |
Being constantly exposed to advertisements is annoying, but it ______ be pleasant sometimes.
| A．shall | B．need | C．can | D．must |
Some people say that every Senior 3 student is undergoing the most stressful times and with this I can’t agree ________.
| A．less | B．many | C．much | D．more |
The first textbooks ______ for teaching English as a foreign language came out in the 16th century.
| A．having written | B．to be written |
| C．being written | D．written |
— Oh, dear! We only have 15 minutes to get to the station.
— So terrible! There isn't any taxi around when you want ______.
| A．it | B．that | C．this | D．one |