This kind of food _____ cool, clean and dry according to the instruction.
| A．should be carried | B．must be put | C．should be placed | D．must be kept |
--- do you spell “clock”?
--- C-L-O-C-K, clock.
| A．What | B．How | C．Who | D．Where |
--- Are those his pencils?
--- Yes, _____.
| A．it is | B．those are |
| C．they are | D．these are |
—Is that your book?
—No, .
| A．it is | B．it isn’t |
| C．they’re | D．they aren’t |
______ are John’s ______.
| A．This, key | B．That, key |
| C．These, keys | D．Those, key |
--- Mum, _______ is my friend, Eric.
--- Nice to meet you.
| A．his | B．it | C．she | D．this |