Modern science has given clear evidence ______ smoking can lead to many diseases.
A. what B which C. that D where
You’d better have your long hair ___ tomorrow.
| A．cut | B．cuttled | C．cutting | D．to cut |
His uncle returned home ___ Feiday morning.
| A．in | B．at | C．on | D．/ |
He worked late into the night yesterday. That’s ___ he couldn't get up on time this morning
| A．how | B．why | C．what | D．when |
--___ today? ---It's sunny.
| A．what day is | B．How is the weather like | C．What is the date | D．What's the weather like |
Don't worry about ___ haven't arrived yet.
| A．whatever | B．whoever | C．whenever | D．whomever |