助動詞１

( ) I borrow your pen, please?

He ( ) be in because I can hear his radio.

彼のラジオが聞こえてくるので、彼は中にいるに違いない

He looks quite young. He ( ) be over 50.

彼は明日郵便局へ行かなくてはなりませんか。

Will he ( ) go to the post office tomorrow?

Since you have a bad cold, you really ( ) stop smoking.

あなたはひどい風邪をひいているから、本当はたばこをやめるべきだ。

私は学生時代よく一人で川に釣りに行ったものだ。

In my school days I ( ) often go fishing in the river by myself.

彼女は以前は日曜ごとにデパートに行ったものだが、今はいかない。

She ( ) to the department store every Sunday, but now she doesn't.

The street is wet. It ( ) yesterday.

She ( ) been sick in bed yesterday. I saw her at the supermarket.

※be sick in bed　「病気で寝る」