Nobody believed his reason for being absent from the class ________ he had to meet his uncle at the airport．

A．why

B．that

C．where

D．because

If you are traveling ________ the customs are really foreign to your own, please do as the Romans do．

A．in which

B．what

C．when

D．where

You should make it a rule to leave things ________ you can find them again．

A．when

B．where

C．them

D．there

It was not until she got home ________ Jennifer realized she had lost her keys．

A．when

B．that

C．where

D．before

It is these poisonous products ________ can cause the symptoms of the flu, such as headache and aching muscles．

A．who

B．that

C．how

D．what

A fast food restaurant is the place ________, just as the name suggests, eating is performed quickly．

A．which

B．where

C．there

D．what

The pen I ________ I ________ is on my desk, right under my nose．

A．think; lost

B．thought; had lost

C．think; had lost

D．thought; have lost

Helen was much kinder to her youngest son than to the others, ________, of course, made the others envy him．

A．who

B．that

C．what

D．which

The film brought the hours back to me ________ I was taken good care of in that faraway village．

A．until

B．that

C．where

D．when

________ is often the case, we have worked out the production plan．

A．Which

B．When

C．What

D．As