1.I was ______ work last week, but I changed my mind.
a. to startb. to have started c. to be starting d. to have been starting
2.I intended ______ the matter with you, but I had some guests hen.
a. discussb. discussing c. having discussed d. to have discussed
3.Don’t let me catch you ______.
a. do that againb. to do that againc. doing that againd. done that again
4.There are many kinds of metals ______.
a. each has its special propertiesb. one has its special properties
b.each having its special propertiesd. having its special properties
5.It’s pay-day, and they’re waiting ______.
a. for payingb. to be paidc. to be payingd. to have paid
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