_______ he can recover soon, I don't mind how much money I have to pay.

A．If clouds are high, there will be bad weather.
B．The color of clouds is a factor to help predict the weather.
C．If the weather is good, the clouds must be very low.
D．To study clouds is the only way to understand the weather.

A．A sudden and warn wind.
B．Thick and lower clouds.
C．Small and feathery cirrus clouds.
D．Dark and thunder clouds.