(1) I invited a few friends over for a barbeque, but so far [?] has arrived.

(2) [?] should always do his or her best.

(3) Although many people were invited, [?] actually came.

(4) When our flight was delayed, some passengers became angry, but [?] were patient.

(5) Tom and Bill are late again. When the boss finds out, [?] are going to be in trouble.

(6) The dessert you made for supper was delicious. Is [?] left?

(7) This test on pronouns is easy. [?] can pass it.

(8) [?] forgot to turn off the heater before going to bed last night.

(9) What shall we do? The house is already full of people, and [?] are coming.

(10) The customers were disappointed with the food and the service. In fact, [?] complained.

(11) We'll be arriving at the airport soon. Has [?] got his or her passport?

(12) It looks like [?] is ready for the party.

(13) [?] left this scarf in the classroom, so I'll take it to the lost and found.

(14) It doesn't matter which taxi service we call. [?] will be fine.

(15) You look very busy. Is there [?] I can do to help?