The engineers in this lab spent several weeks _______ their plans for the new bicycleA.cou

The data to be recorded on this sheet _____ the performance of the engine.

The engineers spent the whole night（work) ___________on the new device.

Press this button to start the engine.（英译中)

A．She spent most of her time under the sea.B．She spent most of her time lying in the s

All the equipment in the lab______made in China.A．areB．isC．beD．should

"Time", says the proverb, "is money". This means that every moment well-spent may bring ou