We_______ any classes if it ______ snowy tomorrow

___________ they lack official support, they continue their struggle.[ ]

You can _______ the bottle ______ water, Jim.

Our company has arranged me to go on a business trip to Shenzhen next week，but I will drop in on my friend in Guangzhou first.In other words，I will go to Shenzhen ________ Guangzhou

I ________ great contributions to science cause.