(49) She has been teaching Rnglish at this school for ten years. She (2 6@under thirty.
①must not ②may not ③cannot ④wil not 5そいktAでの リキすでない
ーー 吉キ
⑮50) When traveling overseas, people( )carry too much cash. Credit cards are Safer.
①should ②had not better ③ought not to ④have not
