—Hi, this way, please.—OK.I sometimes have no sense of ______ when I arrive at the crossroad.
He devoted all the time _____ his research .
Mr. Liu dreamed ____ a big house for his parents after they retire.
On the bus I saw a student____ I thought was your brother.
We’ll never forget the days ______ we lived in the country.
He lives in a room _______ faces the south.