The house caught___fire last night but no one knows who set ___fire to it. A. X;X B.X;a C, a; a D, a; X
. _______ his mother, the baby could not help _______.
_______ the news of his father's death, he burst into tears.
I searched for my wallet and it wasn't there. At first, I thought I _______ it at home. Then I remembered _______ it out to pay for the taxi.
The thief drove as fast as he could to escape ________ by the police.
We’ d better try to the plan again, I think, before we with it.