A dictionary is necessary if you want to learn English, so you’d 
better buy .
| A．this | B．that | C．it | D．one |
Without proper lessons, you could ___ a lot of bad habits when playing the piano.
| A．keep up | B．pick up | C．make up | D．catch up |
Though he is busy, music has always been _______ his work.
| A．as much a part of his life as | B．as a part of his life much as |
| C．as much as a part of his life | D．so much a part of his life as |
It’s high time that we _____ measures to stop selling polluted vegetables.
| A．must take | B．take | C．took | D．will take |
East of our city ______ a world-famous pagoda dating from Tang Dynasty.
| A．stands | B．stand | C．stood | D．standing |
--- Did your boss phone you again the next day?
--- No, it was a fortnight ____ he gave me a second call.
| A．that | B．when | C．before | D．since |