It was the training ____ he had as a young man ____ made him such a good engineer.
The church tower which ________will be open to tourists soon. The work is almost finished.
The manager was worried about the press conference his assistant _______in his place, but luckily, everything was going on smoothly.
—So you gave her your phone? —_______. She said she’d return it to me when she could afford her own.
—Do you know who knocked at our door last night, the postman? —It _______ him. It was only 5 o’clock.
It is said the Great Wall_______ the Warring States, is _______worth visiting.