I think ______ is necessary ______ us to do something useful to protect the birds.
| A．this; for | B．it; of | C．this; of | D．it;for |
——Who do you think is of the two boys? ——Jack.
| A．tall | B．taller |
| C．the taller | D．the tallest |
She is so kind and generous _____________.
| A．to others | B．to the others |
| C．for others | D．for the others |
Mum，My trousers are old.I want to buy a new________.
| A．trousres | B．one | C．it | D．pair |
_________morning_________ good for our health.
| A．Do；exercise is | B．Do；exercises is |
| C．Doing；exercises are | D．Doing；exercises is |
_________fine weather it is today!
| A．How | B．How a |
| C．What | D．What a |