I like to go shopping at the weekdays,_____the shop isn’t crowded.
| A．which | B．when | C．that | D．where |
.____to someone , a British person often shakes hands with the stranger.
| A．Introducing | B．To introduce | C．To be introduced | D．On being introduced |
_____a reply he decided to write again.
| A．Not receiving | B．Receiving | C．Not having received | D．Having not received |
Little Franz thought of nothing but ______football .
| A．play | B．to play | C．played | D．playing |
Good care must babies particularly while they are ill.
| A．take | B．taken of | C．be taken | D．be taken of |
.If _____,the experiment will be successful.
| A．carefully doing | B．it done carefully | C．carefully done | D．doing carefully |