1.That pen _ 10 yuan.A. spends B. takes C. costs D. pays1.答案:C 四个词虽都为花费,但spend主语必须为人,故剔除,take后跟双宾语,故也剔除,pay的意思多为付款,支付,与本语境不符,cost又可翻译为“值”所以此题选C2.We _ supper last night.A. have B. has C. had D. are having2.答案:C “last night”表示为过去时,故A排除,再因为是点动词,故D排除,时态选择一般过去时,have过去式为had 故选C3.Tom studies _ Jack.A. as carefully as B. so carefully as C. as careful as D. so careful as3.答案:A 固定句型,as.as 中必须加形容词或副词原级,意为“和一样”故选A4.There is _ in t