I was blessed with a happy childhood, ________ that most people would want to have．

A．it

B．one

C．/

D．the one

A great number of students ________ said they were forced to practise the piano．

A．to question

B．to be questioned

C．questioned

D．Questioning

________ our manager objects to Tom's joining the club, we shall accept him as a member

A．Until

B．Unless

C．If

D．After

It was not until mid-night ________ they reached the camp site．

A．that

B．when

C．while

D．as

I wonder ________ can be done to get rid of my smoking．

A．how

B．which

C．what

D．when

I can't go with you now．I ________ a lesson at nine o'clock this morning．

A．will be giving

B．would give

C．give

D．will give

Along the river ________ where they will spend weekends．

A．stands a big hotel

B．a big hotel stands

C．stand a big hotel

D．a big hotel stand

His partner left the company, ________ it more difficult for him to run it．

A．makes

B．make

C．to make

D．making

Last Saturday, we were walking along the street ________ a car suddenly knocked an old man over．

A．when

B．while

C．as

D．since

Please come back soon if you ________ leave now．

A．can

B．may

C．must

D．would