Only in this way _________ learn this language well.
---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.
At the meeting, the old man ______ some good advice about bringing down the market price of housing.
It is nice to hear from a close friend. ______, we last met more than thirty years ago.