I don't know ________ he lives．

A．what

B．how

C．where

D．which

________, my teacher gave me some advice on how to learn English．

A．In the last few days

B．In the past few weeks

C．The other day

D．At present

Look at the museum over there．It's an ________ building．

A．88-meters-high

B．88-meter-high

C．88 meters-high

D．88 meters high

________ the rain has stopped, we can go to the museum．

A．Even if

B．Now that

C．Even though

D．So that

Look at your dirty room．It ________ up every day．

A．should clean

B．can clean

C．should be cleaned

D．can be cleaned

Please turn off the lights when you leave the classroom instead of keeping them ________．

A．up

B．off

C．down

D．on

I'm sorry I can't get my work ________ by 5∶00 pm．I need more time．

A．finish

B．to finish

C．finished

D．finishing

If I ________ a million dollars, I ________ all over the world．

A．have; traveled

B．had; traveled

C．had; would travel

D．will have; will travel

There are no customers (顾客) in the hotel．It ________ have the friendliest service．

A．must

B．needn't

C．may

D．can't

________ is quite strange that we haven't received any letters from Dad．

A．It

B．That

C．This

D．There