Båve has argued that act-type theories of propositions entail unwanted ambiguity of sentences such as ‘Donald loves Joan’. King has argued that act-type theories of propositions entail an unwanted abundance of propositions. I reply that a version of the act-type theory can avoid these objections. The key idea is that grammar constrains the acts that can be performed by the utterance of a sentence. I present enough of the details of this version of the act-type theory to show how it (...) can be used to respond to Båve's and King's objections. I conclude that this is a promising way to develop the act-type theory of propositions. (shrink)