Complete the conditional sentences by putting the verbs into the correct form.
(1.) If you (send)_____ this letter now, she (receive)____. it tomorrow.
(2.) If I (do)_____this test, I (improve)_____my English.
(3.)Peggy(go)____shopping if she (have)_____time in afternoon.
(4.)Simon(go)_____to London next week if he (get)______a cheap flight.
(5.) If they (study/not)______harder,they (pass/not)____the exam.
​