We have been looking at houses, but haven’t found _____ we like yet.
| A．ones | B．one | C．them | D．it |
People often have this belief ___development is bad for the environment, but this does not have to be true.
A which B whose C that D when
The children were ______ for the accident. After all they were so young.
| A．not to blame | B．to not blame |
| C．not blamed | D．to not be blamed |
—Mary, let’s go to the bookshop this weekend. Will you be ______?
—Sorry, but I’m going to visit my uncle in the countryside.
| A．vacant | B．suitable | C．convenient | D．available |
—Oh, dear! I forgot the air tickets.
—You ______ something.
| A．have left | B．are always leaving | C．are leaving | D．always left |
The companies are working together to create_____ they hope will be the best means of transport in the 21st century.
| A．what | B．that | C．which | D．who |