To be honest, I don't know ____ she is married or not.

• that
• what
• if
• how
• why

Do you know _____ he can't come to the meeting tomorrow? Is he sick?

• that
• if
• how
• why
• where

Look at his luxurious car! I _____ he is quite rich.

• decide
• remember
• forget
• think
• wonder

I _____ if they can finish the project before the deadline. They still have so much to do.

• wonder
• imagine
• bet
• know
• tell

She works in a multinational company but I don't _____ what her title is.

• claim
• know
• suppose
• think
• bet

I don't really understand _____ she gets her money from.

• why
• that
• where
• how
• if

I'm sure _____ Eric enjoys his new job so much. He looks very happy recently.

• how
• if
• what
• why
• that

He _____ that he can earn more if he starts his own company. He will probably leave his job soon.

• decides
• claims
• wonders
• realises
• asks

I wonder ______ the dress I bought online will arrive. I hope it arrives before the wedding.

• if
• whether
• why
• how
• when

I didn't _____ you speak Chinese! I was really suprised when I heard you talking to the tourists.

• wonder
• understand
• realise
• claim
• bet