课时作业(二十三) [必修5 Unit 3 Life in the future]
(限时：35分钟)
Ⅰ.单项填空
1．________alone in the large house，the little boy had to learn to survive by himself.
A．To leave B．Leaving
C．Left D．Being left
2．The couple watched the Kongming light go higher and higher until they lost ________ of it.
A．view B．scene C．vision D．sight
3．Laura had a tense expression on her face，________ she had met some alien creatures.
A．even if B．as if
C．so that D．now that
4．I'm sure the beauty of ________ nature there will make ________ excellent impression on you.
A．the; the B．the; an
C．/; an D．/; /
5．It would be very safe if you ________ the door ________ to the garden.
A．fasten; led B．will fasten; leads
