选择：He ( ) all his time ( ) reading.
A.spends,to B.spend, in C.spent, / D.spend, on

答案选D：

spend,
vt.
(spent [spent])
用(钱), 花费
消耗, 用尽, 浪费
消磨(时光), 度过
献出;【航海】失去(桅)
spend money on books
花钱买书
spend all one's energies
竭尽全力
spend a lot of care on sth. [in doing sth.]
在某事上[做某事时]费很多心血
spend one's blood and life for the cause of communism
献身于共产主义事业
He doesn't spend much time on his homework .
他花在作业上的时间不多。
They went on firing until all their ammunition was spent.
他们不断射击, 直到耗尽所有的弹药。
How do you spend your leisure?
你是怎样消磨空闲时间的?
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cost
n.
费用
成本
价钱, 代价
损害;损失;牺牲
［pl.］诉讼费
living costs
生活费用
initial cost
原价
cost and freight (C.F.)
离岸加运费价
cost insurance and freight (C.I.F.)
到岸价格
cost price
成本价
costs of production
生产成本
court costs
诉讼费
costs against the defendent
被告承担的诉讼费
The battle was won at (a)great cost of life.
牺牲了许多生命才换来这场战斗的胜利。
词性变化：
vi.
(cost)
花费, 付代价
计算成本
That sofa really costs.
那个沙发很贵。
How dear the lesson costs!
这个教训代价多大啊！
Clerk wanted, able to cost.
招聘职员, 须能计算成本者。
cost
vt.
花费(金钱, 时间)
使付出(代价), 使损［丧］失, 牺牲
估定...的成本, 要价
cost menus
估定饭菜的成本
That suit costs me over
￡ 6. 那件上衣花掉我6英镑。
Courtesy costs little and means much.
礼节并不失去什么却获益甚多。
Careless driving cost him his life.
漫不经心的开车使他丧失生命。
cost accountant [clerk]
(工商企业的)成本会计员
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pay
vt., vi.
paid, paying
付（款）；支付；缴纳
He paid ￡5 for the book.
他买这本书花了五英镑。
"I'd like to pay by cheque, please."
我想用支票支付。
I paid $150 for that walki-lookie.
我花了一百五十美元买了那台轻便电视摄影机。
"The international corporation paid $50,000 for the firm, and $2,000 for its goodwill."
"这家跨国公司用五万美元买下了这家商号,两千美元买下了它的信誉。"
付清（账单、债务）
Can you lend me some money - I can pay you back tomorrow.
你能借给我点儿钱吗？我明天就可以还给你。
Have I paid you back the $20 you lent me?
你借给我的二十美元我还给你了吗?
Have you paid the electricity bill for the last month yet?
你缴了上个月的电费了吗?
生利；有…收益；值得（麻烦）；合算
It pays me to keep that stock.
持有那种股票对我有利。
It will pay to read a dictionary if you have time.
"如果你有时间,翻翻词典是值得的。"
It will pay in the long run if the setting off of firecrackers is effectively banned in the cities.
"从长远来看,在城市里真正有效地禁放鞭炮,是值得的。"
做；致；说
pay a visit
访问
pay a call
拜会
pay a compliment
致意
pay one's respects
致敬
The workers paid homage to the king when he came to the factory for a visit.
"当国王来到工厂参观时,工人们向他致敬。"
给；与
pay attention
注意
遭受惩罚
She has paid the penalty for her theft.
她犯的偷窃罪已受到惩罚。
He paid dearly for his careless slip.
他为自己粗心的失误付出了巨大的代价。