— How are you getting on with your work?— Oh, I am sorry Things aren’t going so well as _____ [ ]

I’d get it for you__ I could remember who last borrowed it.

In the past few years, research has suggested that Vitamin D may increase the level of serotonin（血清素）, one of the key nurotransmitters influencing our mood, and ________it helps to relieve mood disorders.

.Your watch is slow. You’d better ________ it.

__ from endless homework on weekends, thestudents now find their own activities, such as taking a ride together to watchthe sunrise