C d. D Use infinitives and gerunds correctly.

The noun or pronoun following these indefinite pronouns determine their number. If the noun or pro- noun is plural, then the verb must be plural. If the noun or pronoun is singular, then the verb must be singular. All of the work is done. All of the tasks are completed. Is there any pie left? Are there any pieces of pie left? Most of the milk was sour. Most of the glasses of milk were sour. None of the money was spent. None of the funds were spent. Some of the fruit was shipped. Some of the apples were shipped. Notice these are noncount nouns. Notice these are count nouns. T ROUBLESOME P RONOUNS A few pronouns are confusing even for native speakers of English. The possessive pronouns its, your, their and whose are often confused with the contractions it’s it is or it has, you’re you are, they’re they are and who’s who is. The key to using them correctly is to remember that there is no apostrophe if you want to show possession. Only use the form with an apostrophe if you mean to have a pronoun and verb combination. It’s time for us to say goodbye and head home. It is time . . . It’s been three years now since the interest rate has changed. It has been . . . The dog wagged its tail happily. possession Your pager is beeping. possession You’re going to have to turn off your beeper. You are going to . . . They’re waiting for us at the bus station. They are waiting . . . Their bus arrived right on time. possession Whose Palm Pilot® is this? possession Who’s coming to the fundraising dinner? Who is coming . . . The pronouns who, that, and which are also often confused. Here are the general guidelines for using these pronouns correctly: ■ Use who when referring to people: There is the woman who designed this building. The man who bought my car wants to buy my bicycle, too. ■ Use that when referring to things: This is the neighborhood that suffered the worst damage during the riots. The printer that earned the highest ratings is out of stock. – S T R U C T U R E : G R A M M A R A N D S T Y L E – 7 5