By the time Billy was 6, he in the sea.
A．had already swum B．was already swimming
C．has already swum D．already swam
A terrible earthquake with tsunami happened in Japan, more than 10,000deaths.
A．causing B．to cause C．caused D．having caused
Mum: Tom?
Tom: ? Here I am.
A．What B．OK C．Yes? D．All right
I prefer ________ the movies rather than ________ home.
A．go to; stay B．to go to; stay
C．going to; staying D．to go to; staying
At the meeting, the old man ______ some good advice about bringing down the market price of onion.
A．came about B．came along C．came up with D．came out
We were swimming in the lake _____ suddenly the storm started.
A．when B．while C．until D．before
