How ______ your father _____ (go) to work every day?He ______ (go) by bike.But it’s cold today.He ______ (take) the No.21 bus,and he _______ (go) to work by taxi yesterday.这个句子中的But it’s cold today.He ______ (take) the No.21 bus。这句到底当什么时态来看。

一般过去时态啊。。