Mary's pale face suggested that she __________ ill. And we suggested that she __________ a medical examination.
Emergency line operators(接线员) must always _____ calm and make sure that they can get all the information they need to send help.
.Modern agriculture has greatly developed and nowadays animals are usually raised in _____ we call factory farms. As a result of this, lots of labour is saved.
The professor kept telling us that the future _____ to the well-educated and I kept wondering where I _____ of it.
— Dad, I’d like to go to the cinema with you. — Sorry, dear, but the film is _____ adults only.
I don't think the experiment is _____ failure. At least we have got _____ experience for our future work on _____ nature.