It is ___ to observe traffic rules.
| A．of great importance for us | B．important to us | C．great importance of us | D．of great importance to us |
一You don’t go to that supermarket quite often, do you?
—No, I only go there ______because it’s too far away from my house.
| A．gradually | B．Temporarily |
| C．occasionally | D．briefly |
The girl arranged to have piano lessons at the training center with her sister ______ she would stay for an hour.
| A．where | B．which | C．who | D．what |
Dave nearly ran into a block when walking down the street with his mind ______ on the word puzzle.
| A．to fix | B．fixing | C．fixed | D．was fixed |
______ is the kindness of the nurse that the patient can never be _______ to her.
| A．So; too thankful | B．Such; too thankful |
| C．So; that thankful | D．Such; enough thankful |
Since nobody gave him any help, he ______ have done the research on his own.
| A．can | B．must | C．would | D．need |