The toughest thing about success is ________ you have to keep on being a success.
| A．why | B．when | C．what | D．that |
（上海卷32）. I had great difficultythe suitable food on the menu in that restaurant.
| A．find | B．found | C．to find | D．finding |
（浙江卷20）. The traffic rule says young children under the age of four and __ less than 40 pounds must be in a child safety seat.
| A．being weighed | B．to weigh | C．weighed | D．weighing |
（浙江卷8）. The experiment shows that proper amounts of exercise, if __ regularly, can improve our health.
| A．being carried out | B．carrying out | C．carried out | D．to carry out |
(重庆卷34). Many buildings in the city need repairing, but the onefirst is the library.
| A．repaired | B．being repaired | C．repairing | D．to be repaired |
(重庆卷30). The news shocked the public, to great concern about students’ safety at school.
| A．having led | B．led | C．leading | D．to lead |