A：why
B：that
C：what
D：which
Cathy is 1. 53 meters tall, but she is 160 pounds(磅). So she decided to lose weight(减肥) from now on. She made a plan for losing weight and puted it on the wall.
Exercise
1). Run for 30 minutes every morning.
2). Swim in the club twice a week.
3). Go to work on foot instead of (代替) by bus every day.
4). Take a walk after supper every day.
Food
1). Have only a glass of milk and an egg for breakfast every morning.
2). Just have fruit for supper three times a week.
3). Eat more vegetables and less meat for dinner.
4). Never eat junk food.
5). Drink at least(至少) eight cups of water every day.
下列有关实验室制取氧气或二氧化碳气体所用物质和装置均正确的是（ ）
I can____(run, running) very fast.
