It’snecessary_________usallto________
A、for,keepinglearning
B、to,keeplearning
C、of,keeptolearn
D、for,keeplearning
Josephwasverylucky____withhislife;healmostdidnotgetoutoftheroom.
A、toescape
B、tohaveescaped
C、toescaping
D、tobeescaping
Hewasalmostasleep,____withallthishardwork.
A、worndown
B、wornout
C、wornoff
D、wornaway
Withonelegbrokeninthatcaraccident,hecannotevenwalk,____run.
A、letalone
B、that’stosay
C、nottospeak
D、nottomention
The____ofAIDShasledtoanexpansioninresearchseekingacure.
A、innovation
B、selection
C、proliferation
D、conviction