下列各组字母中,全部是元音字母的是_____.A. a, e, r B. i, u, e C. o, n, u
The kids are doing some experiment ______ the farm in the country.
We are listening the weather report _____ the radio.
Sandra said she would be back _____ this morning.
Do they work _____ the day time or _____ night?
Lily had left ______ the time we arrived.