he didn't come to school,( )his mother was ill A.because B.forC.a_英语解答

he didn't come to school,( )his mother was ill A.because B.forC.asD.since 空里填哪一项及原因
还有due to和due to the fact

人气：437 ℃　时间：2020-04-05 12:01:13

解答

B.for
在做连词时,选择中的B最好,因为只有for的前面可以有逗号,其他连词（because 和 since）前面都不应用逗号.
due to是介词词组,不属于例句一类.