It’s fascinating to see _____ different people approach the problem.
| A．what | B．which | C．how | D．that |
The newly-built pavilion is _____ the old one.
| A．three times so big as | B． 3 times bigger than |
| C．as three times big as | D． 3 times the big of |
We are told that more new teaching buildings ________ in our school next term.
| A．will be built | B．was built | C．has built | D．will build |
The bike under the tree ________ belong to Hilary. Look! Her bag is on it.
| A．must | B．shall | C．will | D．can |
The kind-hearted woman made _______ her duty to look after all the old people there.
| A．this | B．that | C．one | D．it |