Most of the students haven’t finished their papers on time for __________reasons---one of which was that they carried out a week-long investigation in the countryside.
The handbag___ several days ago was found ____ under the seat inside the railway station.
According to a new study by a university in Britain, learning a second language can ____ an increase in your brain power.
---Bob has gone to California. ---Oh, can you tell me when he ____?
__Barbara Jones offers to her fans is honesty and happiness.
Experiments of this kind ___in both the U.S and Europe well before the Second World War.